This doesn't change the current system. We only specify further that
a patch must be merged for the issue to be considered resolved. This
is assumed, but since we were asked for clarifications we decided
to specify it in the terms of the bounty system.
- Add mention in the README
- add new workflow label.yml, which uses github actions to post the
rules of the bounty as a comment in an issue labelled 'bounty'
- add docs/bounties.md where the bounty system is documented