[FL-2589] RPC App control commands (#1350)

* RPC App control commands
* Button release timeout
* SubGhz tx fix

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

applications/lfrfid/scene/lfrfid_app_scene_rpc.h

@@ -0,0 +1,12 @@
+#pragma once
+#include "../lfrfid_app.h"
+
+class LfRfidAppSceneRpc : public GenericScene<LfRfidApp> {
+public:
+    void on_enter(LfRfidApp* app, bool need_restore) final;
+    bool on_event(LfRfidApp* app, LfRfidApp::Event* event) final;
+    void on_exit(LfRfidApp* app) final;
+
+private:
+    bool emulating = false;
+};