feat: expose UiNotifications service (#1172)

* playing around

* Change extension init and preRegistration signature

* Clear test code

* Update core index test

* Fix test

* Tricking the bug

* Renaming file back to trick some weird bug

platform/viewer/src/appExtensions/MeasurementsPanel/index.js

@@ -7,8 +7,8 @@ export default {
    */
   id: 'measurements-table',
 
-  preRegistration(configuration = {}) {
-    init(configuration);
+  preRegistration({ serviceManager, configuration = {} }) {
+    init({ serviceManager, configuration });
   },
   getPanelModule() {
     return {