Added favicon, text stroke and changes to data handling

src/types/Leaflet.ts

@@ -0,0 +1,12 @@
+export type MapMarkerGroup = "capitals" | "cities" | "towns" | "landmarks";
+
+export type MapMarker = {
+    title: string,
+    markerCoords: {
+        x: number,
+        y: number,
+    }
+    description?: string,
+    link?: string,
+    group?: MapMarkerGroup,
+}