[Feature Request] Overwrite Portforward

[schoennenbeck]

Since portforwarding is somewhat brittle and since I have multiple applications that each offer their services under the same port I would like to be able to overwrite forwarded ports.

Describe the solution you'd like
When I ask k9s to forward a port but the port on my machine is already occupied by another k9s-managed portforward I would like a little popup that asks me if I want to overwrite the existing portforward. This way I would not have to switch to the portforward window, remove the existing one and then come back to the services and create the new portforward.