Add drawing sharing functionality and localization updates

- Implemented sharing options for drawings, including sharing to a public channel and specific rooms.
- Added confirmation dialogs for deleting drawings and sharing drawings.
- Enhanced the drawing toolbar to display a list of user's drawings with options to share or delete.
- Updated localization files for English, Spanish, French, Croatian, Italian, German, Slovenian, and other languages to include new strings related to drawing sharing and management.
- Introduced syncing of drawing messages with the DrawingProvider to restore missing drawings.
- Improved the drawing minimap preview to display a small preview of drawings in the toolbar.

lib/providers/app_provider.dart

@@ -322,6 +322,11 @@ class AppProvider with ChangeNotifier {
       debugPrint('📍 [AppProvider] Starting location tracking after successful initialization');
       await _startLocationTracking();
 
+      // Sync drawing messages with DrawingProvider
+      // This restores any drawings that may be missing from storage
+      debugPrint('🎨 [AppProvider] Syncing drawing messages with DrawingProvider...');
+      messagesProvider.syncDrawingsWithProvider(drawingProvider);
+
       notifyListeners();
     } catch (e) {
       debugPrint('Initialization error: $e');