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_en.arb

@@ -619,6 +619,10 @@
   "map_sharedPin": "Shared pin",
   "map_joinRoom": "Join Room",
   "map_manageRepeater": "Manage Repeater",
+  "map_tapToAdd": "Tap on nodes to add them to the path.",
+  "map_runTrace": "Run Path Trace",
+  "map_removeLast": "Remove Last",
+  "map_pathTraceCancelled": "Path trace cancelled.",
   "mapCache_title": "Offline Map Cache",
   "mapCache_selectAreaFirst": "Select an area to cache first",
   "mapCache_noTilesToDownload": "No tiles to download for this area",
@@ -1317,6 +1321,7 @@
   "pathTrace_notAvailable": "Path trace not available.",
   "pathTrace_refreshTooltip": "Refresh Path Trace.",
   "pathTrace_someHopsNoLocation": "One or more of the hops is missing a location!",
+  "pathTrace_clearTooltip": "Clear path.",
   "contacts_pathTrace": "Path Trace",
   "contacts_ping": "Ping",
   "contacts_repeaterPathTrace": "Path trace to repeater",