Desktop settings merge and refactor, keybinds improvements

- Keybinds in own code helper files
- Keybinds as flipper format, loaded only when ran, no limit on length
- Migrate from old keybinds
- Merge desktop settings refactors after LFS removal PR
- Statusbar clock setting in desktop settings like OFW
- Hand orient setting in system settings like OFW

applications/services/desktop/desktop_keybinds.h

@@ -0,0 +1,27 @@
+#pragma once
+
+#include <furi/core/string.h>
+
+#include "desktop.h"
+
+typedef enum {
+    DesktopKeybindTypePress,
+    DesktopKeybindTypeHold,
+    DesktopKeybindTypeMAX,
+} DesktopKeybindType;
+
+typedef enum {
+    DesktopKeybindKeyUp,
+    DesktopKeybindKeyDown,
+    DesktopKeybindKeyRight,
+    DesktopKeybindKeyLeft,
+    DesktopKeybindKeyMAX,
+} DesktopKeybindKey;
+
+typedef FuriString* DesktopKeybinds[DesktopKeybindTypeMAX][DesktopKeybindKeyMAX];
+
+void desktop_keybinds_migrate(Desktop* desktop);
+void desktop_keybinds_load(Desktop* desktop, DesktopKeybinds* keybinds);
+void desktop_keybinds_save(Desktop* desktop, const DesktopKeybinds* keybinds);
+void desktop_keybinds_free(DesktopKeybinds* keybinds);
+void desktop_run_keybind(Desktop* desktop, InputType _type, InputKey _key);