Document new release process for all repos #98
Description
Some repos using makefile-modules have a release process defined which uses makefile-modules itself.
For example, csi-driver.
Some repos have documentation for this, and other don't.
Since the release process should be similar for all these repos, it would be worth having a central point of documentation on "how to release a makefile-modules project" and then link to that central doc in all repos which use that release process.
Currently, it's not clear how a release should be done just from looking in the usual places in a repo.