SMSAdvance/PocketNES/Goomba: Consider using the raw save filename to populate the game title field

[euan-forrester]

Right now we populate that field with:

• Made with savefileconverter.com: SMSAdvance
• SAVE: PocketNES (consistent with how it appears when running in standalone mode on an EZ Flash ODE)
• The internal name from the game ROM: Goomba

We could consider unifying this to contain the filename of the raw file it was converted from (assuming that Goomba doesn't use the internal ROM name to verify the save is for the correct ROM. It also has the checksum for that. More code reading needed here).

I don't believe that these names appear anywhere in the emulator UI, but if we did #134 then it would be nice to have something better to display in our UI.