Rewrite Save Data & Impl Save Data Dialog (#824)

* 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

CMakeLists.txt

@@ -232,11 +232,18 @@ set(SYSTEM_LIBS src/core/libraries/system/commondialog.cpp
                 src/core/libraries/system/msgdialog_ui.cpp
                 src/core/libraries/system/posix.cpp
                 src/core/libraries/system/posix.h
-                src/core/libraries/save_data/error_codes.h
+                src/core/libraries/save_data/save_backup.cpp
+                src/core/libraries/save_data/save_backup.h
+                src/core/libraries/save_data/save_instance.cpp
+                src/core/libraries/save_data/save_instance.h
+                src/core/libraries/save_data/save_memory.cpp
+                src/core/libraries/save_data/save_memory.h
                 src/core/libraries/save_data/savedata.cpp
                 src/core/libraries/save_data/savedata.h
-                src/core/libraries/system/savedatadialog.cpp
-                src/core/libraries/system/savedatadialog.h
+                src/core/libraries/save_data/dialog/savedatadialog.cpp
+                src/core/libraries/save_data/dialog/savedatadialog.h
+                src/core/libraries/save_data/dialog/savedatadialog_ui.cpp
+                src/core/libraries/save_data/dialog/savedatadialog_ui.h
                 src/core/libraries/system/sysmodule.cpp
                 src/core/libraries/system/sysmodule.h
                 src/core/libraries/system/systemservice.cpp
@@ -349,6 +356,7 @@ set(COMMON src/common/logging/backend.cpp
            src/common/concepts.h
            src/common/config.cpp
            src/common/config.h
+           src/common/cstring.h
            src/common/debug.h
            src/common/disassembler.cpp
            src/common/disassembler.h
@@ -607,6 +615,7 @@ set(VIDEO_CORE src/video_core/amdgpu/liverpool.cpp
 set(IMGUI src/imgui/imgui_config.h
           src/imgui/imgui_layer.h
           src/imgui/imgui_std.h
+          src/imgui/imgui_texture.h
           src/imgui/layer/video_info.cpp
           src/imgui/layer/video_info.h
           src/imgui/renderer/imgui_core.cpp
@@ -615,6 +624,8 @@ set(IMGUI src/imgui/imgui_config.h
           src/imgui/renderer/imgui_impl_sdl3.h
           src/imgui/renderer/imgui_impl_vulkan.cpp
           src/imgui/renderer/imgui_impl_vulkan.h
+          src/imgui/renderer/texture_manager.cpp
+          src/imgui/renderer/texture_manager.h
 )
 
 set(INPUT src/input/controller.cpp