Added Count Down Timer

applications/plugins/cntdown_timer/app.h

@@ -0,0 +1,22 @@
+#ifndef __APP_H__
+#define __APP_H__
+
+#include <furi.h>
+#include <gui/gui.h>
+#include <gui/view_dispatcher.h>
+
+// app
+typedef struct {
+    Gui* gui; // gui object
+    ViewDispatcher* view_dispatcher; // view dispacther of the gui
+
+    // views
+    CountDownTimView* helloworld_view;
+
+} CountDownTimerApp;
+
+CountDownTimerApp* countdown_app_new(void);
+void countdown_app_delete(CountDownTimerApp* app);
+void countdown_app_run(CountDownTimerApp* app);
+
+#endif