src: Project Refactoring

* Added language specific Project and ProjectSettings
* moved project specific code from Application to Project
* made Application a singleton
* added handleDialog method to Application which displays a dialog window and waits for user input
* Added ScopedFunctor that executes a function when deleted

src/lib/utility/ScopedFunctor.cpp

@@ -0,0 +1,11 @@
+#include "utility/ScopedFunctor.h"
+
+ScopedFunctor::ScopedFunctor(std::function<void(void)> onDestroy)
+	: m_onDestroy(onDestroy)
+{
+}
+
+ScopedFunctor::~ScopedFunctor()
+{
+	m_onDestroy();
+}