libdcp/src/rating.h, branch fmt

libdcp/src/rating.h, branch fmt DCP handling library https://git.carlh.net/cgit/libdcp/atom?h=fmt 2022-03-03T20:58:31Z Add lists of ratings. 2022-03-03T20:58:31Z Carl Hetherington cth@carlh.net 2022-03-01T16:06:26Z urn:sha1:e375fdddf7cc608eefdc054d74e90bb95d573172 Move Rating out to a separate file. 2022-03-01T15:27:59Z Carl Hetherington cth@carlh.net 2022-03-01T15:27:59Z urn:sha1:bb8def962ae0092238d2263c1a2335b0206c4dc4