SubGhz: Сreating and delivering Security+ 2.0 (#1273)

* SubGhz: Security+ 2.0 "Add manually" option
* SubGhz: fix message error
* Unit_test: add Security+ 2.0 encoder
* Applications: remove obsolete code
* SubGhz: save menu position in "Add Manually" menu

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

applications/scened_app_example/scened_app_launcher.cpp

@@ -1,11 +0,0 @@
-#include "scened_app.h"
-
-// app enter function
-extern "C" int32_t scened_app(void* p) {
-    UNUSED(p);
-    ScenedApp* app = new ScenedApp();
-    app->run();
-    delete app;
-
-    return 0;
-}