[FL-1824] Dolphin refactoring (#701)

* refactoring p1
* refactoring p2
* cleanups
* locked screen refresh rate fix
* better locked view logic
* seperate dolphin service and desktop app
* Desktop: Favorite app acess (Left key), Settings app
* Desktop settings version, submenu header
* remove unused icon anomation + naming fix

Co-authored-by: あく <alleteam@gmail.com>

applications/desktop/desktop_settings/desktop_settings.h

@@ -0,0 +1,15 @@
+#pragma once
+
+#include <stdint.h>
+#include <stdbool.h>
+
+#define DESKTOP_SETTINGS_VER (0)
+
+typedef struct {
+    uint8_t version;
+    uint16_t favorite;
+} DesktopSettings;
+
+bool desktop_settings_load(DesktopSettings* desktop_settings);
+
+bool desktop_settings_save(DesktopSettings* desktop_settings);