Hints for libretro-genesisplusgx in multiverse

Warnings

• internal-unknown-tag
  The generator emitted a tag 'internal-unknown-tag' which is unknown. This is a bug in the metadata generator, please file a bugreport.
• asv-cid-is-not-rdns
  libretro-genesisplusgx.metainfo.xml:3 - libretro-genesisplusgx
  The component ID is required to follow a reverse domain-name scheme for its name. See the AppStream specification for details.