Updates the platform communication to use Pigeon. This includes some changes to the API boundary:
- Collected authentication options into an options object; this avoids having a lot of positional boolean arguments (since Pigeon doesn't currently support named arguments).
- Collected strings into a strings object, since having them as individual parameters would have been extremely messy.
- Changes the `authenticate` return from a bool+exceptions to an enum that encompasses all of the explicitly known failure modes. To avoid a breaking change for clients, the Dart code creates `PlatformException`s that match the old ones, but this will make it much easier to someday make a (cross-platform) breaking change to replace them with better errors per the best practices we have documented on the wiki. Using an enum rather than throwing errors avoids the need to do string matching when we want to eventually translate them into something other than `PlatformException`.

This removes all Java warnings from the baseline file; the remaining issues in code I wasn't already changing were easy enough to fix opportunistically. There are still XML-based warnings, but fixing those was well out of scope so I left them.

Part of flutter/flutter#117912

… /packages/webview_flutter/webview_flutter_android/android (#3739)

Bumps com.android.tools.build:gradle from 7.2.2 to 8.0.0.

[![Dependabot compatibility score](https://dependabot-badges.githubapp.com/badges/compatibility_score?dependency-name=com.android.tools.build:gradle&package-manager=gradle&previous-version=7.2.2&new-version=8.0.0)](https://docs.github.com/en/github/managing-security-vulnerabilities/about-dependabot-security-updates#about-compatibility-scores)

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flutter/flutter@15cb1f8...42fb0b2

2023-04-18 katelovett@google.com Fix text theme dart fix cases (flutter/flutter#125052)
2023-04-18 gspencergoog@users.noreply.github.com Update the copy icon in snippets and samples to use the standard one (flutter/flutter#123651)
2023-04-18 jmccandless@google.com Remove unused context parameter (flutter/flutter#124254)
2023-04-18 jmccandless@google.com iOS spell check cursor placement (flutter/flutter#124875)
2023-04-18 engine-flutter-autoroll@skia.org Roll Flutter Engine from d2973619074e to 55bb065c607b (1 revision) (flutter/flutter#125047)
2023-04-18 zanderso@users.noreply.github.com Stop running "_impeller_" benchmark variants (flutter/flutter#125044)
2023-04-18 engine-flutter-autoroll@skia.org Roll Packages from 0277f2a to faf53fb (7 revisions) (flutter/flutter#125040)
2023-04-18 engine-flutter-autoroll@skia.org Roll Flutter Engine from c4396f9f602f to d2973619074e (6 revisions) (flutter/flutter#125039)
2023-04-18 fluttergithubbot@gmail.com Roll pub packages (flutter/flutter#125005)
2023-04-18 pateltirth454@gmail.com [InputDatePickerFormField] adds acceptEmptyDate to InputDatePickerFormField Widget (flutter/flutter#124143)
2023-04-18 44755140+werainkhatri@users.noreply.github.com relayout active ListWheelScrollView children every performLayout (flutter/flutter#124476)
2023-04-18 engine-flutter-autoroll@skia.org Roll Flutter Engine from 4a603aaff32e to c4396f9f602f (2 revisions) (flutter/flutter#125007)
2023-04-18 engine-flutter-autoroll@skia.org Roll Flutter Engine from 20034a8d62c4 to 4a603aaff32e (2 revisions) (flutter/flutter#125004)
2023-04-18 katelovett@google.com Add optional axis specifier to static scrollable methods (flutter/flutter#124894)
2023-04-17 barpac02@gmail.com Update usage of standalone`pub` executable in flutter_tools testing docs (flutter/flutter#124898)
2023-04-17 warriorharish95668@gmail.com Add Harish Anbalagan to AUTHORS (flutter/flutter#124684)
2023-04-17 engine-flutter-autoroll@skia.org Roll Flutter Engine from b2d07388ceb6 to 20034a8d62c4 (7 revisions) (flutter/flutter#125001)
2023-04-17 36861262+QuncCccccc@users.noreply.github.com Add an example for SearchBar (flutter/flutter#124992)
2023-04-17 47866232+chunhtai@users.noreply.github.com SelectionContainer's listeners can remove itself during listener call� (flutter/flutter#124624)

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Transfer of flutter/plugins#7113 (All the comments of that PR have been addressed in this one)

This PR follows the procedure for changing federated plugins: https://github.com/flutter/flutter/wiki/Contributing-to-Plugins-and-Packages#changing-federated-plugins

~~This is the aggregate solution for flutter/flutter#27729 and is NOT intended to be submitted. This will be split into PRs for each package after approval of this PR.~~ All split PRs have been merged.

This adds the `PlatformNavigationDelegate.setOnUrlChange(UrlChange)` method to track url changes.

Android adds support for this with the [WebViewClient.doUpdateVisitedHistory](https://developer.android.com/reference/android/webkit/WebViewClient#doUpdateVisitedHistory(android.webkit.WebView,%20java.lang.String,%20boolean))

iOS adds support by observing the value [WKWebView.URL](https://developer.apple.com/documentation/webkit/wkwebview/1415005-url?language=objc). Since the WKWebView.URL would pass back an [NSURL](https://developer.apple.com/documentation/foundation/nsurl?language=objc) to the [observeValue](https://developer.apple.com/documentation/objectivec/nsobject/1416553-observevalueforkeypath?language=objc) callback, the `observeValue` callback would need to distinguish the difference when returning an `int` or an identifier. So the `ObjectOrIdentifier` data class was created to handle this. Alternatives considered:

* Convert `NSURL `to an `NSString`. This would work for this situation, but wouldn't work for a class that can't be easily converted to a `String`.
* Create a separate `observeValue `callback method for returning an identifier. Potentially named `observeIdentifier`. This doesn't work for returning a list of Objects.

Fixes flutter/flutter#27729

Bumps cirrusci/flutter from `794fbbc` to `d99b1ba`.

[![Dependabot compatibility score](https://dependabot-badges.githubapp.com/badges/compatibility_score?dependency-name=cirrusci/flutter&package-manager=docker&previous-version=794fbbce5422e79aae1dbf6e6cbfcf5fe89aff50350d7c018853b3cfdf35821a&new-version=d99b1ba2602240a74722970b5c0cd704bbe60a7eba7557157c784f2f693c393f)](https://docs.github.com/en/github/managing-security-vulnerabilities/about-dependabot-security-updates#about-compatibility-scores)

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flutter/flutter@42fb0b2...3476b96

2023-04-19 42216813+eliasyishak@users.noreply.github.com Update helper message for `--suppress-analytics` (flutter/flutter#124810)
2023-04-19 engine-flutter-autoroll@skia.org Roll Flutter Engine from 8b7cdb02f7f3 to 609f9d536494 (1 revision) (flutter/flutter#125097)
2023-04-19 engine-flutter-autoroll@skia.org Roll Flutter Engine from 099ed6c62d04 to 8b7cdb02f7f3 (6 revisions) (flutter/flutter#125094)
2023-04-19 engine-flutter-autoroll@skia.org Roll Flutter Engine from 5fcc7b719029 to 099ed6c62d04 (3 revisions) (flutter/flutter#125078)
2023-04-19 jmccandless@google.com Disableable ContextMenuButtonItems (flutter/flutter#124253)
2023-04-18 58190796+MitchellGoodwin@users.noreply.github.com Adaptive alert dialog (flutter/flutter#124336)
2023-04-18 engine-flutter-autoroll@skia.org Roll Flutter Engine from 6d263ea56a62 to 5fcc7b719029 (4 revisions) (flutter/flutter#125069)
2023-04-18 58529443+srujzs@users.noreply.github.com Remove package:js/dart:js_interop conflicts (flutter/flutter#124879)
2023-04-18 abadasamuelosp@gmail.com Remove double.fromEnvironment from dart-define doc (flutter/flutter#124102)
2023-04-18 40026920+KKimj@users.noreply.github.com Update to add Kim Jiun to `AUTHORS` (flutter/flutter#125026)
2023-04-18 gspencergoog@users.noreply.github.com Add controller argument to SubmenuButton (flutter/flutter#125000)
2023-04-18 engine-flutter-autoroll@skia.org Roll Flutter Engine from 879308a52228 to 6d263ea56a62 (1 revision) (flutter/flutter#125060)
2023-04-18 jmccandless@google.com Limit the number of Material spell check suggestions to 3 (flutter/flutter#124899)
2023-04-18 magder@google.com Remove impeller testowners (flutter/flutter#125056)
2023-04-18 110993981+htoor3@users.noreply.github.com [web] - Clean up skipped tests (flutter/flutter#124981)
2023-04-18 engine-flutter-autoroll@skia.org Roll Flutter Engine from 72b68622fffa to 879308a52228 (1 revision) (flutter/flutter#125057)
2023-04-18 goderbauer@google.com Remove unused getRootRenderObject and getSelectedRenderObject service extensions (flutter/flutter#124805)
2023-04-18 thkim1011@users.noreply.github.com l10n.yaml's nullable-getter option should default to true (flutter/flutter#124353)
2023-04-18 engine-flutter-autoroll@skia.org Roll Flutter Engine from 55bb065c607b to 72b68622fffa (1 revision) (flutter/flutter#125053)
2023-04-18 47866232+chunhtai@users.noreply.github.com Add vmservice for android build options (flutter/flutter#123034)

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