Add UI for DIDKIT.

DIDKit/App/MenuAction/ExitAction.cpp

@@ -0,0 +1,17 @@
+#include "ExitAction.h"
+
+ExitAction::ExitAction(const QString& aName,QWidget* aParent)
+    : QAction(aName, aParent)
+{
+    connect(this,&QAction::triggered,this,&ExitAction::executeAction);
+}
+
+ExitAction::~ExitAction()
+{
+
+}
+
+void ExitAction::executeAction()
+{
+    exit(0);
+}