Delete save functionality

Skawo added the ability to delete saves.

How this works currently:

1. navigate to your save folder
2. press L+R at the same time
3. press A to delete and B to cancel

pretty straight foward, if you need to read the controls press Z twice.

Known issues:
viewing real mempaks give an error "not formatted", this doesnt indicate anything is wrong with it and backup works.
nes games should be run through nes padder to ensure whole rom being read.
msx gamegear and mp3s havent worked since before i got my hands dirty, injecting them however will work.
Some games like Custom Robo don't save
There's no database for Problematic games(ie press c right and set Dinosaur planet to flash saves and the 6102 cic chip.)
music lags in the file menu, this does not indicate anything is wrong with your ed64p.