[Request] Add support for the SMS

[sdsnatcher]

Please add support for the Sega Master System on the Retroblaster.

[Misanthroat]

And Mark III + Game Gear. :)

[Laggamer30xx]

See this is what open source is for.

[retrostage]

See this is what open source is for.

Both SMS and GG adapters are currently in development, planned for release late this year.