refactor(core): Have one orchestration service per instance type (#7303)

webhook instances will not listen to either worker or event log messages
on the Redis pub/sub channel

packages/cli/src/services/orchestration/webhook/handleCommandMessageWebhook.ts

@@ -0,0 +1,6 @@
+import { handleCommandMessageMain } from '../main/handleCommandMessageMain';
+
+export async function handleCommandMessageWebhook(messageString: string) {
+	// currently webhooks handle commands the same way as the main instance
+	return handleCommandMessageMain(messageString);
+}