Allow custom ports to be added to namespaceSelector

[PrymalInstynct]

Is your feature request related to a problem? Please describe.
I have a prod and dev k8s cluster which I expose to the world through different port forwards at my firewall. I would like to be able to customize the namespaceSelector settings to allow a custom port to be added to the end of the link it gleans from the cluster. I know you can do this with customApps but it would be nice to have it be automatic

Describe the solution you'd like
When I go to my dev hajimari instance I want to see that the links are using the correct port assigned to that cluster's ingress

Describe alternatives you've considered
I could stop using namespaceSelector and use customApps instead but that isn't as clean