feat(geomap): create geomap note type

src/public/app/widgets/geo_map.ts

@@ -0,0 +1,18 @@
+import NoteContextAwareWidget from "./note_context_aware_widget.js";
+
+const TPL = `\
+<div class="geo-map-widget">
+    Map goes here.
+</div>`
+
+export default class GeoMapWidget extends NoteContextAwareWidget {
+
+    constructor(widgetMode: "type") {
+        super();
+    }
+
+    doRender() {
+        this.$widget = $(TPL)
+    }
+
+}