Based on sardemff7 previous wayland attempt

- Fix mouse support
- Handle key repeats
- Positioning
- Fix periodic count updates

It seems like since meson 0.55.0, subprojects with name separators don't
work at all (they were causing a warning before).

This is a quick dirty fix, until we fix this upstream.

Fixes #2

Overlay is reserved for lock screens and similar programs.

Fixes #7

Was causing segfaults when window content updates too fast.

Fixes #9

Fixes #6

See swaywm/wlroots#2422,
swaywm/sway#5712

This reverts commit dc1b159.

Given the current options, it's probably better to show rofi on top of
lock screens than not show it on top of full screen windows.

Discussion:
lbonn#12
lbonn#7

Formatting changes only

Include wayland version.

isssue: #2133

issue: #2133

Also try to make the option printing more consistent

issue: #2134

Also by default they both need to be available, you can disable
depending on your needs.

remove ref. to fork from README.

- "[Wayland] HiDPI: Try the first transparent frame trick"
commit 146c7b1.

- "[Wayland] If there is one monitor use dpi of that monitor."
commit 9afe543.

* [Wayland] Estimate DPI from one detected monitor

This will work for single-monitor setup

Co-Authored-by: lbonn

* [Wayland] Update the DPI estimation to also use monitor name if available.

* [Doc] Update DPI setting for wayland in manpage.

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Co-authored-by: Qball <qball@blame.services>