Set up GitHub Action for publishing to Azure

[newswim]

See: https://learn.microsoft.com/en-us/azure/azure-functions/functions-how-to-github-actions?tabs=python

[zimzoom]

Draft up: #23

(needs debugging on the http request)
This deploys to dev env, after this works we can add publish to prod.

[tpadmanabhan]

Review with Josh L

[tpadmanabhan]

@normaljosh Can you proceed with this ticket?