External field (#580)

* feat: add external endpoint

* add external to messagecontrol

---------

Co-authored-by: Carlos Valente <carlosvalente@pm.me>

apps/server/src/app.ts

@@ -33,6 +33,7 @@ import { populateStyles } from './modules/loadStyles.js';
 import { eventStore, getInitialPayload } from './stores/EventStore.js';
 import { PlaybackService } from './services/PlaybackService.js';
 import { RestorePoint, restoreService } from './services/RestoreService.js';
+import { messageService } from './services/message-service/MessageService.js';
 
 console.log(`Starting Ontime version ${ONTIME_VERSION}`);
 
@@ -155,6 +156,9 @@ export const startServer = async () => {
   const initialPayload = getInitialPayload();
   eventStore.init(initialPayload);
 
+  // eventStore set is a dependency of the services that publish to it
+  messageService.init(eventStore.set.bind(eventStore));
+
   expressServer.listen(serverPort, '0.0.0.0');
 
   return { message: returnMessage, serverPort };