* core: Rewrite PSF parser & add encoder
add .sfo hex pattern to /scripts
* core/fs: allow to mount path as read-only
* common: Add CString wrapper to handle native null-terminated strings
* SaveData: rewrite to implement full functionality
* mock value for SYSTEM_VER
* SavaData: backup features
* SavaData: SaveDataMemory features
* imgui Ref-counted textures
- has a background thread to decode textures
* imgui: rework gamepad navigation
* PSF: fixed psf not using enum class for PSFEntryFmt (was a standard old ugly enum)
- Add null check to CString when itself is used in a nullable field
* SaveDataDialog implementation
- Fix Mounting/Unmounting check of SaveInstance