Add support for GBRV

[mbercx]

See https://www.physics.rutgers.edu/gbrv/

Note: some may not have hints: simply set very high cutoffs and warn user on install.
Note: our definition of "established families" is a bit more strict:

https://aiida-pseudo.readthedocs.io/en/latest/design.html#established-families

But I suppose we can be flexible in favor of usability/scope.