Refactor app menu, add place lists

Unify sidebar, make everything route-based

app/templates/menu.gjs

@@ -0,0 +1,15 @@
+import Component from '@glimmer/component';
+import AppMenu from '#components/app-menu/index';
+import { service } from '@ember/service';
+import { action } from '@ember/object';
+
+export default class MenuTemplate extends Component {
+  @service router;
+
+  @action
+  close() {
+    this.router.transitionTo('index');
+  }
+
+  <template><AppMenu @onClose={{this.close}} /></template>
+}