Add localization support for German, Spanish, French, and Italian

- Updated localization files for French, Croatian, Italian, Slovenian to include translations for German, Spanish, French, and Italian.
- Added new methods for handling drawing messages sent to the public channel in multiple languages.
- Enhanced the Contact model to identify public channels using a dedicated method.
- Implemented echo detection for public channel messages, including tracking and reporting of echoes.
- Updated BLE response handling to support echo detection and tracking of sent messages.
- Modified UI components to reflect new localization strings and echo statuses.

.claude/settings.local.json

@@ -21,7 +21,18 @@
       "Bash(flutter analyze lib/widgets/map/trail_controls.dart lib/screens/map_tab.dart)",
       "Bash(flutter analyze lib/screens/device_config_screen.dart)",
       "Bash(flutter analyze lib/services/ble/ble_response_handler.dart)",
-      "Bash(flutter analyze)"
+      "Bash(flutter analyze)",
+      "Bash(flutter analyze lib/models/contact.dart)",
+      "Read(//Users/dz0ny/meshcore-sar/MeshCore/**)",
+      "Read(//Users/dz0ny/meshcore-sar/**)",
+      "Bash(flutter analyze lib/models/sent_message_tracker.dart lib/models/message.dart lib/services/ble/ble_response_handler.dart)",
+      "Bash(flutter pub get)",
+      "Bash(flutter analyze lib/models/contact.dart lib/providers/app_provider.dart lib/widgets/contacts/contact_tile.dart lib/widgets/map/drawing_toolbar.dart)",
+      "Bash(flutter analyze lib/services/locale_preferences.dart)",
+      "Bash(flutter analyze lib/services/ble/ble_response_handler.dart lib/models/sent_message_tracker.dart)",
+      "Bash(flutter analyze lib/utils/message_extensions.dart)",
+      "Bash(flutter analyze lib/l10n/)",
+      "Bash(flutter analyze lib/services/ble/ble_response_handler.dart lib/utils/message_extensions.dart)"
     ],
     "deny": [],
     "ask": []