feat: add CI step to package and publish Helm chart

[Yuni-sa]

What this PR does / why we need it?

This PR adds a CI step in GitHub Actions to package and publish a Helm chart. It also includes ArtifactHub annotations in the Chart.yaml file to provide additional metadata for ArtifactHub listings.

PR Checklist

• [ ] This PR adds K8s exceptions (false positives)
• [ ] This PR adds new code
• [ ] This PR includes tests for new/existing code
• [ ] This PR adds docs
• [X] This PR adds to a workflow

GitHub Issue

285

Notes for your reviewers

• The CI workflow relies on a branch gh-pages to be created first and in Settings/Pages the Source Branch should be gh-pages.
• The gh-pages branch should be created before this PR is merged.
• Created ArtifactHub annotations (artifacthub.io/license and artifacthub.io/links) in Chart.yaml.
• To add the chart to ArtifactHub, we need to create an ArtifactHub repository and submit another PR to add an artifacthub-repo.yml file and a README.md to the gh-pages branch. (example: https://github.com/kubernetes-sigs/metrics-server/tree/gh-pages)

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 41.34%. Comparing base (ced2ef2) to head (d7040e6). Report is 1 commits behind head on main.

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #306 +/- ## ======================================= Coverage 41.34% 41.34% ======================================= Files 61 61 Lines 3212 3212 ======================================= Hits 1328 1328 Misses 1671 1671 Partials 213 213 ```

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[yonahd]

Created the branch. @Yuni-sa can you rebase?

[Yuni-sa]

@yonahd