v1.16.0: PS3 disc ISO support

PS3 disc ISO (.iso) support: direct ISO9660 read, no mount needed (drag and drop or Open). Extra ISO spec rows (Category, App/Trophy ID, Parental Level, Update PUP). Image tab shows only the XMB set (ICON0/PIC) instead of all game textures. PS3 disc region prefixes (BLES/BLUS/BLJS/BLAS).