[RFC] mrhlpr.json: accept all generic package commits

I don't think the current mrhlpr formats properly represent what commit subjects we actually accept, the rules about having "new aport", "pkgrel bump", "new device" etc are sensible, but the current implementation means that any commit message not matching one of those is denoted "unknown", and mrhlpr gets unhappy.

Asking contributors to fix commit messages for new packages/upgrades etc is currently an entirely manual process, mrhlpr just acts as a last line of defence here, although given how often I have to ignore it's warning I'm not sure how effective it is.

Perhaps we could create a git pre-commit hook which checks if the change is a new aport, upgrade, etc and warns the user about it?