Update Tunnel CRD status with information about active tunnels

[alex-bezek]

Description

Today, the tunnel controller watches but does not "manage" the tunnel CRD meaning it doesn't do any updates to its status or finalizers. Each controller watches tunnels and creates tunnels via ngrok-go. Ideally, those active tunnels are visible somewhere such as on the tunnel status.

We can't easily do this today though as only 1 leader elected controller can be managing the status.

Use Case

This would give necessary insight into the status of your tunnels for debugging and troubleshooting purposes. This way when you do something like
kubectl get tunnels you would get an output thats like 3/3 showing the pods that have active tunnels.

Related issues

No response