Inital widget support

Closes #3525417

js/Base/GeolocationGeometry.js

+/**
+ * @prop {string} type
+ * @prop { number[] | number[][] | number[][][] | number[][][][]} coordinates
+ */
+export class GeolocationGeometry {
+  /**
+   * @param {string} type
+   * @param {array} coordinates
+   */
+  constructor(type, coordinates) {
+    this.type = type;
+    this.coordinates = coordinates;
+  }
+}