Create dedicated blurb repo

[hugovk (Hugo van Kemenade)]

Right now, the code for blurb is in the python/core-workflow repo.

The cherry_picker code used to be there too, but that was already moved to a dedicated python/cherry-picker repo in 2019.

Are there any objections to moving blurb to its own repo at python/blurb?

This will allow us to more cleanly set up automated publishing to PyPI, and keep core-workflow for issues like new triager requests.

See python/core-workflow#329 for further discussion.

[gpshead (Gregory P. Smith)]

Makes tons of sense to me!

[hugovk (Hugo van Kemenade)]

Thanks, following the policy, I’ve asked the steering council: python/steering-council#240.

[hugovk (Hugo van Kemenade)]

Followup: blurb now lives at python/blurb