### Motivation

See proposal

### Modifications

N/A

### Result

N/A

### Test Plan

N/A

### Motivation

Since idiomatic naming is our new recommended setting, use it in
Examples and IntegrationTest.

### Modifications

Added idiomatic naming to all examples and made any necessary changes.
Plus a few modernizations, like moving to Hummingbird 2.0 and to
Prometheus 2.0.

### Result

More up-to-date examples, easier to copy out by adopters, they now get
our recommended starting settings.

### Test Plan

Ran and tested locally.

---------

Co-authored-by: Si Beaumont <simonjbeaumont@gmail.com>

### Motivation

The recently introduced naming strategy is only configurable in the
config file, but pure CLI users might also want to use it without
creating a config file.

### Modifications

Add a `--naming-strategy` option to the `swift-openapi-generator` CLI.

### Result

Users can use the new naming strategy without creating a config file, if
they didn't have one before.

### Test Plan

Tested manually on a sample project.

### Motivation

Currently unit tests on Swift 6.1+ toolchains are failing due to a few
missing imports.

That these are coming up is good, that's why we've enabled
`MemberImportVisibility`.

### Modifications

Add the missing imports to stop relying on implicitly imported extension
methods.

### Result

Unit tests compile again on Swift 6.1+.

### Test Plan

Tested locally, will further verify CI is happy.

…istent (#713)

### Motivation

A missed fixup from #708:
#708 (comment)

### Modifications

Removed the default from Config.init and forced all callers to make a
choice on the naming strategy, just like for accessModifier.

### Result

Consistent handling of these two parameters.

### Test Plan

Tests passed locally.