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_it.dart

@@ -394,6 +394,31 @@ class AppLocalizationsIt extends AppLocalizations {
   @override
   String get drawRectangleDesc => 'Disegna un\'area rettangolare sulla mappa';
 
+  @override
+  String get measureDistance => 'Misura Distanza';
+
+  @override
+  String get measureDistanceDesc => 'Premi a lungo su due punti per misurare';
+
+  @override
+  String get clearMeasurement => 'Cancella Misurazione';
+
+  @override
+  String distanceLabel(String distance) {
+    return 'Distanza: $distance';
+  }
+
+  @override
+  String get longPressForSecondPoint => 'Premi a lungo per il secondo punto';
+
+  @override
+  String get longPressToStartMeasurement =>
+      'Premi a lungo per impostare il primo punto';
+
+  @override
+  String get longPressToStartNewMeasurement =>
+      'Premi a lungo per nuova misurazione';
+
   @override
   String get shareDrawings => 'Condividi Disegni';
 
@@ -1883,4 +1908,19 @@ class AppLocalizationsIt extends AppLocalizations {
 
   @override
   String get updateLater => 'Più Tardi';
+
+  @override
+  String get cadastralParcels => 'Particelle Catastali';
+
+  @override
+  String get forestRoads => 'Strade Forestali';
+
+  @override
+  String get showCadastralParcels => 'Mostra particelle catastali';
+
+  @override
+  String get showForestRoads => 'Mostra strade forestali';
+
+  @override
+  String get wmsOverlays => 'Sovrapposizioni WMS';
 }