Migrate 'Video & Audio' settings screen to compose multiplatform

[Idadelveloper]

What is it?

• Bugfix (user facing)
• Feature (user facing)
• Codebase improvement (dev facing)
• Meta improvement to the project (dev facing)

Description of the changes in your PR

• Introduces PreferenceCategoryTitle reusable composable for section headers inside settings screens
• Adds VideoAudioSettingsViewModel
• Centralizes video/audio preference keys, values, and defaults in VideoAudioPreferences so the screen and the view mode reference the same constants
• Adds VideoAudioSettingsScreen
• Ports the dynamic behavior from VideoAudioSettingsFragment: "Show higher resolutions" inserts 2160p/1440p and resets high selections when disabled
• Wires the "Video and audio" row on the settings home screen to the new destination
• Adds screen tests: VideoAudioSettingsScreenTest

Not in this PR (follow-ups):

• ExoPlayer settings sub-screen
• Overlay-permission snackbar when "Minimize on app switch" is set to popup without draw-over-apps permission (needs a platform actions interface like AppearanceActions

Before/After Screenshots/Screen Record

• Before:
• After:

Fixes the following issue(s)

• Fixes #

Relies on the following changes

• Migrate settings appearance screen #13684

APK testing

The APK can be found by going to the "Checks" tab below the title. On the left pane, click on "CI", scroll down to "artifacts" and click "app" to download the zip file which contains the debug APK of this PR. You can find more info and a video demonstration on this wiki page.

Due diligence

• I read the contribution guidelines.
• The proposed changes follow the AI policy.
• I tested the changes using an emulator or a physical device.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[Idadelveloper]

@theimpulson this looks huge because #13684 is still in review and i branched out of the branch with the changes for the appearance settings screen. Once the review of that is done the changes shown here should be less. Also there are some missing parts of this screen to avoid the pr being too large and will finalize in a subsequent PR.