Add code and style for basic map display

src/main/webapp/lib.js

@@ -0,0 +1,7 @@
+let lib = new function () {
+    this.setStartMarker = function (coordinates) {
+    }
+    this.setMarker = function (marker, lng, lat, map) {
+        marker.setLngLat([lng, lat]).addTo(map);
+    };
+};