✨ Add optional health check endpoint to worker (#2786)

* ✨ Add optional health check endpoint to worker

* 👕 Fix lint issue

* ⚡ Improve error output

packages/cli/package.json

@@ -76,7 +76,6 @@
     "concurrently": "^5.1.0",
     "jest": "^26.4.2",
     "nodemon": "^2.0.2",
-    "p-cancelable": "^2.0.0",
     "run-script-os": "^1.0.7",
     "ts-jest": "^26.3.0",
     "ts-node": "^8.9.1",
@@ -120,6 +119,7 @@
     "n8n-workflow": "~0.86.0",
     "oauth-1.0a": "^2.2.6",
     "open": "^7.0.0",
+    "p-cancelable": "^2.0.0",
     "pg": "^8.3.0",
     "prom-client": "^13.1.0",
     "request-promise-native": "^1.0.7",