feat: notify ws clients on rundown changes (#327)

apps/server/src/adapters/websocketAux.ts

@@ -0,0 +1,12 @@
+import { socket } from './WebsocketAdapter.js';
+
+/**
+ * Utility function to notify clients that the REST data is stale
+ * @param payload -- possible patch payload
+ */
+export function sendRefetch(payload: any | null = null) {
+  socket.send({
+    type: 'ontime-refetch',
+    payload,
+  });
+}