[FL-2753] RFID app port to plain C (#1710)

* LF RFID: port to plain C
* LFRFID debug port to C, new reading screen
* LFRFID debug: fix pvs-studio warnings
* RFID read view: remove unused input callback
* RFID read view: animation update

applications/lfrfid/scenes/lfrfid_scene_retry_confirm.c

@@ -0,0 +1,39 @@
+#include "../lfrfid_i.h"
+
+void lfrfid_scene_retry_confirm_on_enter(void* context) {
+    LfRfid* app = context;
+    Widget* widget = app->widget;
+
+    widget_add_button_element(widget, GuiButtonTypeLeft, "Exit", lfrfid_widget_callback, app);
+    widget_add_button_element(widget, GuiButtonTypeRight, "Stay", lfrfid_widget_callback, app);
+    widget_add_string_element(
+        widget, 64, 19, AlignCenter, AlignBottom, FontPrimary, "Return to reading?");
+    widget_add_string_element(
+        widget, 64, 29, AlignCenter, AlignBottom, FontSecondary, "All unsaved data will be lost!");
+
+    view_dispatcher_switch_to_view(app->view_dispatcher, LfRfidViewWidget);
+}
+
+bool lfrfid_scene_retry_confirm_on_event(void* context, SceneManagerEvent event) {
+    LfRfid* app = context;
+    SceneManager* scene_manager = app->scene_manager;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeBack) {
+        consumed = true; // Ignore Back button presses
+    } else if(event.type == SceneManagerEventTypeCustom) {
+        consumed = true;
+        if(event.event == GuiButtonTypeLeft) {
+            scene_manager_search_and_switch_to_previous_scene(scene_manager, LfRfidSceneRead);
+        } else if(event.event == GuiButtonTypeRight) {
+            scene_manager_previous_scene(scene_manager);
+        }
+    }
+
+    return consumed;
+}
+
+void lfrfid_scene_retry_confirm_on_exit(void* context) {
+    LfRfid* app = context;
+    widget_reset(app->widget);
+}