feat(duo): add punch-hole cutout touch gestures with haptic feedback

[Balajitechlabs]

Context

Turns the physical camera punch-hole cutout into an interactive tactile touch surface for quick media playback control, flashlight toggling, and global navigation actions without obstructing any surrounding UI or status bar elements.

What's included

• Dual-window architecture:
  • DuoOverlayView remains a fullscreen FLAG_NOT_TOUCHABLE drawing canvas.
  • DuoTouchAnchorView is a lightweight circular touch target positioned directly over (cameraCenterX, cameraCenterY).
  • Sub-pixel circular hit-testing (dx^2 + dy^2 <= r^2) ensures touches outside the camera cutout circle pass directly through to underlying apps.
  • Automatically detaches when fullscreen video plays or screen turns off to prevent accidental touches.
• Context-aware actions:
  • Single tap: Toggles play/pause when media is active, turns off flashlight if active, or triggers configured idle action (Notification shade, screenshot, flashlight, or none).
  • Double tap: Skips to the next track when media is playing, or triggers configured action (Lock screen, recents, etc.).
  • Long press: Brings active music app (Spotify/YouTube Music) to foreground, or toggles flashlight when idle.
  • Horizontal swipe: Skips next track (swipe right) or previous track (swipe left).
• Tactile feedback:
  • Spring micro-bounce animation on touch.
  • Optional vibration feedback tick on tap (Vibrate on touch).
• Settings UI:
  • M3 Expressive "Gestures" settings card in Duo settings with action dropdowns.

Verification

• Built cleanly with ./gradlew :app:assembleDebug --no-daemon (0 warnings, 0 errors).
• Stream-installed and verified on a physical Android device (Vivo V2513).

[thenuker123]

Hmm looks good I will tell @sameerasw to double check it and he will probably merge