Add WMS support and measurement functionality

- Implemented WMS layer handling for Slovenian aerial imagery and overlays for cadastral parcels and forest roads.
- Added distance measurement feature allowing users to measure distances on the map with long press interactions.
- Updated localization files for Croatian, Italian, and Slovenian languages to include new measurement and WMS-related strings.
- Enhanced the map layer model to support WMS-specific properties.
- Introduced a new tile provider for debugging WMS requests.
- Updated the drawing toolbar to include measurement mode and clear measurement functionality.
- Integrated SharedPreferences to persist overlay visibility states across app sessions.
- Added utility functions for handling the Slovenian coordinate reference system (EPSG:3794).

lib/l10n/app_localizations_fr.dart

@@ -395,6 +395,31 @@ class AppLocalizationsFr extends AppLocalizations {
   @override
   String get drawRectangleDesc => 'Tracer une zone rectangulaire sur la carte';
 
+  @override
+  String get measureDistance => 'Mesurer la distance';
+
+  @override
+  String get measureDistanceDesc => 'Appui long sur deux points pour mesurer';
+
+  @override
+  String get clearMeasurement => 'Effacer la mesure';
+
+  @override
+  String distanceLabel(String distance) {
+    return 'Distance : $distance';
+  }
+
+  @override
+  String get longPressForSecondPoint => 'Appui long pour le deuxième point';
+
+  @override
+  String get longPressToStartMeasurement =>
+      'Appui long pour définir le premier point';
+
+  @override
+  String get longPressToStartNewMeasurement =>
+      'Appui long pour nouvelle mesure';
+
   @override
   String get shareDrawings => 'Partager les dessins';
 
@@ -1892,4 +1917,19 @@ class AppLocalizationsFr extends AppLocalizations {
 
   @override
   String get updateLater => 'Plus Tard';
+
+  @override
+  String get cadastralParcels => 'Parcelles Cadastrales';
+
+  @override
+  String get forestRoads => 'Chemins Forestiers';
+
+  @override
+  String get showCadastralParcels => 'Afficher les parcelles cadastrales';
+
+  @override
+  String get showForestRoads => 'Afficher les chemins forestiers';
+
+  @override
+  String get wmsOverlays => 'Superpositions WMS';
 }