added github workflow for CI, added krew, updated homebrew

[chandanpasunoori]

• added github workflow
• added krew publishing conf in goreleaser
• updated homebrew with more details
• support for arm64/apple silicon configured is end to end with ci

@boz: to make installation more easy for everybody who is using this awesome pluging, please do follow below steps.

if you are busy you can add me as maintainer to repo, I will update as and when required, in our work place we use this heavily

1. you need to fork krew-index repo as boz/krew-index
2. once this is merged, you should create tag like 1.16.0
   • it will update homebrew tap file in boz/homebrew-repo
   • it will update krew manifest file in boz/krew-index
3. you need to create pull request from boz/krew-index to kubernetes-sigs/krew-index (upstream)

fix #68
fix #67

[chandanpasunoori]

@boz @mnaser can you look into this

[boz]

thanks so much @chandanpasunoori !

[rajatjindal]

Hi @chandanpasunoori

thank you for making this contribution.

I am just curious why we need to open PR to kubernetes-sigs/krew-index manually. I was under impression it will work automatically (with goreleaser or krew-release-bot)

Disclaimer: I authored and maintain krew-release-bot.

[chandanpasunoori]

@rajatjindal goreleaser will update the repo you own, it will not create pull request automatically, which we need to separately or with another action step to automate

Ref https://goreleaser.com/customization/krew/

I will check about krew-release-bot

[chandanpasunoori]

@rajatjindal fyi: I've WIP update to automate krew-index pull request.

[chandanpasunoori]

@rajatjindal its nice, I will update, thanks