RetroDECK filed coco as tandy-coco and Dragon as dragon-32-64, MiSTer
filed COCO3 as tandy-coco and Recalbox kept its raw ids, so none of
them met xroar's coco, coco3 and dragon64 and its ROMs reached no
system. The scraper maps now agree and a test holds every shared
native id to one system.
Adds platforms/misterfpga.yml mapping 17 MiSTer cores (31 BIOS files)
to canonical retrobios entries by MD5, sourced from the live
ajgowans/BiosDB_MiSTer community database.