Add path tracing functionality (#165)

- Implemented path tracing feature in the map screen, allowing users to add nodes to a path and visualize it on the map.
- Added buttons for starting path tracing, removing the last node, and running the path trace.
- Introduced a new overlay to display current path information and distance.
- Updated localization files for multiple languages to include new strings related to path tracing.
- Refactored map rendering logic to accommodate path tracing visuals.

lib/l10n/app_localizations_it.dart

@@ -1359,6 +1359,18 @@ class AppLocalizationsIt extends AppLocalizations {
   @override
   String get map_manageRepeater => 'Gestisci Ripetitore';
 
+  @override
+  String get map_tapToAdd => 'Tocca i nodi per aggiungerli al percorso.';
+
+  @override
+  String get map_runTrace => 'Esegui Path Trace';
+
+  @override
+  String get map_removeLast => 'Rimuovi ultimo';
+
+  @override
+  String get map_pathTraceCancelled => 'Tracciamento del percorso annullato.';
+
   @override
   String get mapCache_title => 'Cache Mappa Offline';
 
@@ -2699,6 +2711,9 @@ class AppLocalizationsIt extends AppLocalizations {
   String get pathTrace_someHopsNoLocation =>
       'Uno o più dei luppoli mancano di una posizione!';
 
+  @override
+  String get pathTrace_clearTooltip => 'Pulisci percorso';
+
   @override
   String get contacts_pathTrace => 'Traccia Percorso';