Update / add Emulators

Emulator management could be improved as well (whenever it’s possible) based on these firsts ideas:

  • Meta Emulator could be updated with the following version which looks to take the sound into account:
    Gamebuino Emulator
  • Classic Emulator could be also included for Games developed on this plateform (I guess this emulator is still available on the Classic wiki. Else I should still have a local version somewhere)
  • Emulators should not be displayed on Creations without working program linked