[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.cpp

@@ -0,0 +1,37 @@
+#include "lfrfid_app_scene_rpc.h"
+#include "furi/common_defines.h"
+#include <dolphin/dolphin.h>
+
+void LfRfidAppSceneRpc::on_enter(LfRfidApp* app, bool /* need_restore */) {
+    auto popup = app->view_controller.get<PopupVM>();
+
+    popup->set_header("RPC Mode", 64, 30, AlignCenter, AlignTop);
+
+    app->view_controller.switch_to<PopupVM>();
+
+    notification_message(app->notification, &sequence_display_backlight_on);
+}
+
+bool LfRfidAppSceneRpc::on_event(LfRfidApp* app, LfRfidApp::Event* event) {
+    UNUSED(app);
+    UNUSED(event);
+    bool consumed = false;
+
+    if(event->type == LfRfidApp::EventType::Exit) {
+        consumed = true;
+        LfRfidApp::Event view_event;
+        view_event.type = LfRfidApp::EventType::Back;
+        app->view_controller.send_event(&view_event);
+    } else if(event->type == LfRfidApp::EventType::EmulateStart) {
+        consumed = true;
+        emulating = true;
+    }
+    return consumed;
+}
+
+void LfRfidAppSceneRpc::on_exit(LfRfidApp* app) {
+    if(emulating) {
+        app->worker.stop_emulate();
+    }
+    app->view_controller.get<PopupVM>()->clean();
+}