Adding release Github Action

[AnomalRoil]

This is a basic action added through the Github interface to see if goreleaser works out of the box.

[codecov-io]

Codecov Report

Merging #1728 (bf22722) into master (a1f5496) will increase coverage by 0.16%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1728      +/-   ##
==========================================
+ Coverage   58.06%   58.22%   +0.16%     
==========================================
  Files         189      189              
  Lines        9080     9172      +92     
==========================================
+ Hits         5272     5340      +68     
- Misses       3210     3230      +20     
- Partials      598      602       +4     

Impacted Files	Coverage Δ
internal/store/leaf/crypto.go	32.86% <0.00%> (-4.85%)	⬇️
internal/action/commands.go	100.00% <0.00%> (ø)
internal/backend/crypto.go	71.43% <0.00%> (+0.60%)	⬆️
internal/action/init.go	56.30% <0.00%> (+2.28%)	⬆️
internal/action/clone.go	59.72% <0.00%> (+2.37%)	⬆️

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[AnomalRoil]

This should trigger when we push to a tag v*, I'll try that next to see how it works: I didn't understand what's happening with the releases once they are produced yet 😆

Signing should be super easy to add once we've figured out how we want to handle the GPG key part:
https://github.com/goreleaser/goreleaser-action#signing

[dominikschulz]

LGTM