Add initial collections editor page (#37643)

app/javascript/mastodon/features/ui/util/async-components.js

@@ -50,6 +50,12 @@ export function Collections () {
   );
 }
 
+export function CollectionsEditor () {
+  return import('../../collections/editor').then(
+    module => ({default: module.CollectionEditorPage})
+  );
+}
+
 export function Status () {
   return import('../../status');
 }