Add discovery.k8s.io/v1 EndpointSlice die

[scothis]

Resolves #144

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 38 lines in your changes missing coverage. Please review.

Project coverage is 10.45%. Comparing base (6bafe0f) to head (306fca9).

Files	Patch %	Lines
apis/discovery/v1/endpointslice.go	0.00%	38 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #145      +/-   ##
==========================================
- Coverage   10.59%   10.45%   -0.14%     
==========================================
  Files          64       65       +1     
  Lines        2955     2993      +38     
==========================================
  Hits          313      313              
- Misses       2639     2677      +38     
  Partials        3        3              

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[mamachanko]

I have not studied every single line but LGTM! Thank you for sending that through.