[wip] host rewrite can target multiple K8s service variants

[dprotaso]

Part of knative/serving#11821

Add the different K8s service types as potential targets for the Host Rewrite functionality.

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[codecov]

Codecov Report

Merging #578 (befe8f9) into main (75d86c5) will increase coverage by 1.39%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main     #578      +/-   ##
==========================================
+ Coverage   93.36%   94.76%   +1.39%     
==========================================
  Files          38       38              
  Lines         814      802      -12     
==========================================
  Hits          760      760              
+ Misses         42       30      -12     
  Partials       12       12              

Impacted Files	Coverage Δ
pkg/apis/networking/register.go	0.00% <0.00%> (ø)

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