ci: add release automation

[werne2j]

Description

Add release automation via pushing a semvar Tag

Example Release:
https://github.com/werne2j/argocd-vault-plugin/releases/tag/v1.1.2

Fixes: #14

Checklist

Please make sure that your PR fulfills the following requirements:

• Reviewed the guidelines for contributing to this repository
• The commit message follows the Conventional Commits Guidelines.
• Tests for the changes have been updated
• Docs have been added / updated

Type of Change

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• New tests
• Build/CI related changes
• Documentation content changes
• Other (please describe)

Thanks to @teejaded for getting this work started!

[codecov]

Codecov Report

Merging #157 (0ba6de4) into main (a68c9a3) will increase coverage by 1.29%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #157      +/-   ##
==========================================
+ Coverage   58.51%   59.81%   +1.29%     
==========================================
  Files          16       16              
  Lines         540      540              
==========================================
+ Hits          316      323       +7     
+ Misses        184      177       -7     
  Partials       40       40              

Impacted Files	Coverage Δ
cmd/version.go	100.00% <100.00%> (+100.00%)	⬆️

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[jkayani]

LGTM