feat(workflows): release workflow

[JanBenisek]

Description

• Workflow that releases chart to OCI and adjusted README.md.
• I added a simple linter, it might be worth to add more like yamllint (especially), kubeconform, chart-testing
• The release process would be:

git commit -m "add resource limit values"

git push

git tag my-chart-v1.3.0
git push origin my-chart-v1.3.0

# workflow runs, pushes to OCI, creates a release

• Something to think about
  • If we enforce conventional commits, we can have nice release notes with cliff.toml.
  • The tag needs to be pushed manually, but that not that bad.
  • Would be nice to add docs for contributors.
  • Would be nice to add pre-commit with the same linters and checks the release workflow would have.
• Not fully tested just yet, but I wanted to push it to have a discussion

[yosuf]

I will merge and rework a bit