feat(player): add pinch-to-zoom mode

[unrasyonel]

Summary

Added Pinch as a fourth video display mode alongside Fit, Fill, and Zoom. This allows user to pinch to zoom.

Changes

• Added focus-aware pinch scaling and translation to ExpandableSurfaceView, from 1x to 8x.
• Added multi-touch handling with ScaleGestureDetector.
• Restricted it only to fullscreen.
• Cancels pending long-press gestures to prevent accidental playback speed changes.
• Added a small animated zoom-level indicator.

Screenshot

Video

video_2026-08-15_17-52-11.mp4

Verification

• Kotlin and Java compilation passed.
• Android resource processing passed.
• Debug APK build passed.
• Manually tested display modes, fullscreen transitions, video changes, and gesture conflicts on my Nothing Phone 2(a) device (Android 16)

[InfinityLoop1308]

Thanks , LGTM :)