chore: Move editor into codebase (#2930)

app/scenes/Document/components/AsyncMultiplayerEditor.ts

@@ -0,0 +1,11 @@
+import * as React from "react";
+
+const MultiplayerEditor = React.lazy(
+  () =>
+    import(
+      /* webpackChunkName: "multiplayer-editor" */
+      "./MultiplayerEditor"
+    )
+);
+
+export default MultiplayerEditor;