add 'debian_salsa' as an OAuth2 id provider
This adds a 'debian_salsa' stanza for salsa.debian.org as an OAuth2 provider.
Additionally I added a debian/salsa-ci.yml
-- which is irrelevant to the above, so you can take it or leave it.
If you want to use it, you'll want to go into repo's Settings > CI/CD > General Pipelines area and set CI/CD configuration file to be debian/salsa-ci.yml
Cheers, Phil.
Edited by Philip Hands