Add chart release workflow

[thomasferrandiz]

What this PR does / why we need it:
Add a workflow and scripts to publish the whereabouts-chart for each new release like in the sriov-network-operator repo

Special notes for your reviewer (optional):
Link to test workflow: https://github.com/thomasferrandiz/whereabouts/actions/runs/10299785123

Note: I left the individual commits to make the PR easier to review but I'll squash them before merging

[coveralls]

Pull Request Test Coverage Report for Build 10617746815

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 54.58%

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Totals
Change from base Build 10187483221:	0.0%
Covered Lines:	1442
Relevant Lines:	2642

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💛 - Coveralls

[dougbtv]

Thanks for getting these up to date!