Add GitHub Action to Release Chart

[jgardner04]

To use this chart as a Helm 3 dependancy the chart needs to be released.

This PR adds a GitHub Action to do the following:

• Check for changes in the chart
• Lint the chart
• Create a kind cluster to test if there are changes
• Creates a release in the gh_pages branch

NOTE: A gh-pages branch will need to be created and GitHub Pages enabled for this to complete.

In my test repo I created and orphaned branch and just added an index.html. the GitHub Action will then publish the index.yaml and the release as seen on that branch.

[liyinan926]

LGTM. Thanks for contributing!

[jgardner04]

@liyinan926 glad I could contribute. The GH action is failing because there is not a branch called gh-pages. My recommendation is to create it using the following

git checkout master
git checkout --orphan -b gh-pages

[liyinan926]

@jgardner04 please create an issue for this. Thanks!