feat(core): Convert eventBus controller to decorator style and improve permissions (#5779)

packages/cli/src/middlewares/isOwner.ts

@@ -0,0 +1,12 @@
+import type { RequestHandler } from 'express';
+import { LoggerProxy } from 'n8n-workflow';
+import type { AuthenticatedRequest } from '@/requests';
+
+export const isOwnerMiddleware: RequestHandler = (req: AuthenticatedRequest, res, next) => {
+	if (req.user.globalRole.name === 'owner') {
+		next();
+	} else {
+		LoggerProxy.debug('Request failed because user is not owner');
+		res.status(401).send('Unauthorized');
+	}
+};