video player ui improvement done

 ui name related issues fixed, bottom box fixed , video player qualit…

…y improved

feat(ui): completely overhaul gallery grid and video player interfaces

- Redesigned adapter_gallery_grid_item.xml to use a 1:1 perfect square aspect ratio with 16dp rounded corners (MaterialCardView).
- Moved gallery grid filenames to sit cleanly below the image thumbnails, removing outdated gradient overlays.
- Updated DirectoryBaseFragment.java to increase the portrait grid span count from 3 to 4, creating a modern 4x5 layout.
- Created custom_video_controller.xml to replace the default ExoPlayer UI with an MX Player-style interface.
- Refactored adapter_gallery_viewpager_item_video.xml to implement the custom controller layout.
- Wired custom video controller logic inside GalleryPagerAdapter.java.
- Fixed ExoPlayer visibility logic in playVideo().
- Added necessary Material Design vector drawables to resolve resource linking errors.

feat(ui): completely overhaul gallery grid and video player interfaces

- Redesigned adapter_gallery_grid_item.xml to use a 1:1 perfect square aspect ratio with 16dp rounded corners (MaterialCardView).
- Moved gallery grid filenames to sit cleanly below the image thumbnails, removing outdated gradient overlays.
- Updated DirectoryBaseFragment.java to increase the portrait grid span count from 3 to 4, creating a modern 4x5 layout.
- Created custom_video_controller.xml to replace the default ExoPlayer UI with an MX Player-style interface.
- Refactored adapter_gallery_viewpager_item_video.xml to implement the custom controller layout.
- Wired custom video controller logic inside GalleryPagerAdapter.java.
- Fixed ExoPlayer visibility logic in playVideo().
- Added necessary Material Design vector drawables to resolve resource linking errors.