feat(aod): add new aod wallpaper timeout and custom section

[isaacsa51]

Description

Implement new values into Wallpaper AOD timeout options as well as a "custom" value slider selector to set a custom value between 1 sec to 3 mins max as the current max implementation/value.

Type of change

• Bug fix
• New feature
• UI / visual update
• Performance improvement
• Refactoring / cleanup
• Translations
• Build / CI tooling

UI changes

Demo from custom ROM using Android 15 and shizuku access:
https://github.com/user-attachments/assets/57fef980-21c8-4d1a-bf83-ee18552f1333

Checklist

Before submitting, please make sure:

• The base branch is set to develop (not main).
• The app builds cleanly locally with ./gradlew assembleDebug.
• Unit tests pass with ./gradlew testDebugUnitTest.
• You tested the changes on a device or emulator (including Shizuku or Root if applicable).
• New preferences use SettingsRepository for keys and getter/setter methods.
• New user-facing settings are registered in FeatureRegistry.kt for search indexing.
• New UI follows the design system in ui/core/ (RoundedCardContainer, IconToggleItem, etc.).
• Strings are added to res/values/strings.xml and drawables use rounded variants (R.drawable.rounded_*).