Multiboot or integration with gamecard-microsd

[motoharu-gosuto]

Either make it possible to have multi boot sd card with multiple isos on it. Can be done with offset table and currently selected entry index.

Other and more prefferable option would be integration with sd2vita adapter. This can be done in physical sd mode. Will have to have MBR with gro0 and ux0 partitions. ux0 will be redirected as usual. gro0 will be redirected to file in ux0. By hooking vfs read and write functions it should be possible to determine to which partition does the read operation belong.