Add PS3 platform

[igno2k]

Describe the feature / request Please add the PS3 platform to Skyscraper.

The needed file per game is called EBOOT.BIN

The file structure to use a PS3 game with rpcs3 is normally like this: /PS3_GAME/USRDIR/EBOOT.BIN

the game can than be started by launching: rpcs3 <eboot.bin path>

Additional context Screenscraper MD5 search cannot be used, because the MD5 sum is based on the ISO checksum, not the EBOOT.BIN file. We have to search by name, screenscraper platform code is 59.

[denisidoro]

I've added support for it in my fork: https://github.com/denisidoro/skyscraper/pull/6

[mrsilver76]

Supported PS3 file extensions should be pkg and iso.