refactor: create separate BLoCs for each screen with comprehensive tests

- Created 8 separate BLoCs (Home, Library, BookDetails, AddBook, Scanner, Categories, Wishlist, Settings)
- Each BLoC has its own event, state, and bloc files
- Added 70 comprehensive tests covering all BLoC functionality
- All tests passing (70/70)
- Fixed linting issues and updated deprecated APIs
- Improved code organization and maintainability

bookshelf_flutter/pubspec.yaml

@@ -0,0 +1,29 @@
+name: bookshelf_flutter
+description: "A Flutter book management app with OCR scanning"
+publish_to: 'none'
+version: 1.0.0+1
+
+environment:
+  sdk: ^3.5.0
+
+dependencies:
+  flutter:
+    sdk: flutter
+  cupertino_icons: ^1.0.8
+  flutter_bloc: ^8.1.6
+  equatable: ^2.0.5
+  cached_network_image: ^3.4.1
+  image_picker: ^1.1.2
+  google_generative_ai: ^0.4.6
+  flutter_svg: ^2.0.10+1
+
+dev_dependencies:
+  flutter_test:
+    sdk: flutter
+  flutter_lints: ^5.0.0
+
+flutter:
+  uses-material-design: true
+  
+  assets:
+    - assets/images/