Add placeholders for moderation actions

web/components/chat/ChatModerationActionMenu.tsx

@@ -0,0 +1,6 @@
+/* eslint-disable @typescript-eslint/no-unused-vars */
+interface Props {}
+
+export default function ChatModerationActionMenu(props: Props) {
+  return <div>Moderation popup menu goes here</div>;
+}