Github actions -> Slack integration

[fgregg]

We are increasingly using github acitons for scheduled ETL jobs.

When that job fails, then a single person gets an email, but github doesn't really provide a way to control who gets that action.

The Slack + GitHub integration can be used to set up notifications of scheduled jobs to a slack channel. using a syntax like this:

/github subscribe datamade/nmid-scrapers workflows:{name:"Scrape data" event:"workflow_dispatch","schedule"}

or

/github subscribe datamade/openness-project-nmid workflows:{name:"Import scraped data to configured database" event:"workflow_dispatch","repository_dispatch"}

Downsides

it will always notify the channel of the action run, not just failing runs.