feat: add goreleaser image to ArtifactHub

[dirien]

Adding the GoReleaser Image to the new ArtifactHub function https://artifacthub.io/docs/topics/repositories/#container-images-repositories

So far so good, It's just miss two properites:

This PR will add them.

Fixes: #2830

[dirien]

@caarlos0: the second part, of the repository-metadata will another PR.

https://artifacthub.io/docs/topics/repositories/#repository-metadata

[dirien]

Linking #2856 to this for the second part of the verification.

[codecov]

Codecov Report

Merging #2855 (c2a4abc) into main (ca361f6) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #2855   +/-   ##
=======================================
  Coverage   84.45%   84.45%           
=======================================
  Files         111      111           
  Lines        8801     8801           
=======================================
  Hits         7433     7433           
  Misses       1101     1101           
  Partials      267      267           

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[caarlos0]

Thanks!