feat: finalizing threads

src/helpers/channels/threads/unarchive_thread.ts

@@ -0,0 +1,6 @@
+import { editChannel } from "../edit_channel.ts";
+
+/** Sets a thread channel to be unarchived. */
+export function unarchiveThread(threadId: bigint) {
+  return editChannel(threadId, { archived: false });
+}