Add support for moving RetroArch to SDCard

Hello,

When I downloading thumbnails and cheats, I have to constantly moving the folders to SDCard especially on Android mobile devices with limited storage. It somehow saves to Internal Storage for everything even though I set the directory to look for the SDCard’s RetroArch folder. Can you guys add support for it to actually save stuff to either the Internal or SDCard or just the SDCard?

Device Info

Device: Samsung Galaxy S8 USA Device Unlocked

OS: Samsung Android 8.0 (Oreo Beta 7)

Model: SM-G950U1

Internal Storage Size: 64GB

SDCard: Samsung Evo Pro

SDCard size: 128GB