feat: Add TorrentEngine library and new API client

- Created complete TorrentEngine library module with LibTorrent4j
  - Full torrent management (add, pause, resume, remove)
  - Magnet link metadata extraction
  - File priority management (even during download)
  - Foreground service with persistent notification
  - Room database for state persistence
  - Reactive Flow API for UI updates

- Integrated TorrentEngine with MainActivity via MethodChannel
  - addTorrent, getTorrents, pauseTorrent, resumeTorrent, removeTorrent
  - setFilePriority for dynamic file selection
  - Full JSON serialization for Flutter communication

- Created new NeoMoviesApiClient for Go-based backend
  - Email verification flow (register, verify, resendCode)
  - Google OAuth support
  - Torrent search via RedAPI
  - Multiple player support (Alloha, Lumex, Vibix)
  - Enhanced reactions system (likes/dislikes)
  - All movies/TV shows endpoints

- Updated dependencies and build configuration
  - Java 17 compatibility
  - Updated Kotlin coroutines to 1.9.0
  - Fixed build_runner version conflict
  - Added torrentengine module to settings.gradle.kts

- Added comprehensive documentation
  - TorrentEngine README with usage examples
  - DEVELOPMENT_SUMMARY with full implementation details
  - ProGuard rules for library

This is a complete rewrite of torrent functionality as a reusable library.

pubspec.yaml

@@ -63,7 +63,7 @@ dev_dependencies:
   flutter_test:
     sdk: flutter
   flutter_lints: ^5.0.0
-  build_runner: ^2.5.4
+  build_runner: ^2.4.13
   flutter_launcher_icons: ^0.13.1
 
 flutter_launcher_icons: