megadriv.xml: Added 4 working items (#12650)

* megadriv.xml: Added 4 working items

New working software list additions
--------------------------------------------
Breach (prototype) [Gaming Alexandria]
Earthworm Jim (USA, prototype 19940728) [Hidden Palace]
Earthworm Jim 2 (Europe, prototype 19950824) [Hidden Palace]
Out of the Vortex (prototype 19950913) [Hidden Palace]

* megadriv.xml: Added language and compatibility info