feature: support ngrok behavior without existing service

[maordavidov]

Scenario:

Developer A works on Cart service
Developer B works on API Gateway service

The cart is a new functionality, never been deployed before. Developer A and Developer B want to integrate with each other.

1. Add command to deploy ad-hoc service with a tunnel
2. Add command to port-forward ONLY from Developer B to the cluster, so Developer B can access all existing services + the new adhoc service, but not tunnel anything