Adjusting the project for Kiosk usage

[andre-trackman]

🚀 Summary

This PR upgrades the project to AGP 9 and includes several updates to the keyboard configuration, UI, and localization to align with Trackman's specific requirements.

📝 Changes

Build and Configuration

The project is now migrated to AGP 9. Additionally, several keyboard features and settings have been disabled in AppPrefs.kt to adjust the application according to current needs.

User Interface and Interaction

The "smart bar" features and the shortcut to access settings via a long-press on the comma key have been removed. A new custom Trackman theme has also been implemented to match the brand's visual identity.

Keyboard and Localization

A fix was applied to the Japanese keyboard to ensure the space bar functions correctly. Furthermore, the default keyboard subtypes have been updated to include additional supported languages.

🧪 How to test?

1. Clean and rebuild the project to verify the AGP 9 migration is successful.
2. Open the keyboard and verify that the new Trackman theme is active.
3. Check the keyboard settings to confirm that the restricted options in AppPrefs.kt are no longer available.
4. Long-press the comma key to ensure the settings shortcut is disabled.
5. Switch to the Japanese keyboard and verify that the space bar works as expected.
6. Check the available language subtypes to confirm the new defaults are present (long-press the language icon to see the list of languages).