feat: add custom map navigation icon

app/src/main/java/com/geeksville/mesh/ui/map/MapFragment.kt

@@ -157,10 +157,14 @@ fun MapView(model: UIViewModel = viewModel()) {
             myLocationOverlay = MyLocationNewOverlay(this).apply {
                 enableMyLocation()
                 enableFollowLocation()
-                AppCompatResources.getDrawable(context, R.drawable.ic_location_dot_24)?.let {
+                AppCompatResources.getDrawable(context, R.drawable.ic_map_location_dot_24)?.let {
                     setPersonIcon(it.toBitmap())
                     setPersonAnchor(0.5f, 0.5f)
                 }
+                AppCompatResources.getDrawable(context, R.drawable.ic_map_navigation_24)?.let {
+                    setDirectionIcon(it.toBitmap())
+                    setDirectionAnchor(0.5f, 0.5f)
+                }
             }
             overlays.add(myLocationOverlay)
         } else {

app/src/main/res/drawable/ic_map_location_dot_24.xml

@@ -6,6 +6,6 @@
     <path
         android:fillColor="#3388ff"
         android:pathData="M12,12m-8,0a8,8 0,1 1,16 0a8,8 0,1 1,-16 0"
-        android:strokeWidth="2.5"
+        android:strokeWidth="2.0"
         android:strokeColor="@android:color/white" />
 </vector>

app/src/main/res/drawable/ic_map_navigation_24.xml

@@ -0,0 +1,11 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="36dp"
+    android:height="36dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="#3388ff"
+        android:pathData="M12,2L4.5,20.29l0.71,0.71L12,18l6.79,3 0.71,-0.71z"
+        android:strokeWidth="1.5"
+        android:strokeColor="@android:color/white" />
+</vector>