chore(android): update app icon assets and adaptive icon configuration

This commit updates the Android app launcher icons, including changes to the adaptive icon configuration and background color.

- **chore(android)**: Updated adaptive icon XML files to use `ic_launcher_foreground` for the monochrome layer.
- **chore(android)**: Updated `ic_launcher_background` color to a lighter shade (`#1C1B1B`).
- **chore(android)**: Updated launcher icon, foreground, and round icon `.webp` assets across all density buckets (hdpi to xxxhdpi).
- **chore(android)**: Updated Play Store icon and main logo image assets.

Author: rainxchzed