Feature Request: Allow filtering out flows from/to non Cilium Ingress

[nebula-it]

We are using Ingress-Nginx as our ignress and when looking at logs of a webapp, most of the flows are just traffic from ingress-nginx to webapp. In the "Visual" drop-down selector add an option to hide traffic related to a particular selector. This selector should be configurable in the hubble config, so a static entry can be used. It should still have the checkmark in front to select/de-select on the fly.

Additionally, if possible add a Textbox filter in there as well, that can be used to define selectors on the fly.