thegamesdb: Add developer, publisher, coop & players
thegamesdb: Add developer, publisher, coop & players

Allow lua thegamesdb to use developer, publisher, coop & players
keys.

grilofw/grilo-plugins,GNOME/grilo-plugins,GNOME/grilo-plugins,grilofw/grilo-plugins,jasuarez/grilo-plugins,jasuarez/grilo-plugins