logic: visual studio solution parsing

Can now parse visual studio solutions. VS Plugin can send a command, parsing is implemented in Coati.
Some minor changes: added project file icon, added language check to vs plugin

src/lib_gui/qt/window/QtProjectSetupScreen.h

@@ -49,6 +49,10 @@ public:
 
 	void projectSetupScreen();
 
+	// fill screen without having to set project setting beforehand (e.g. when creating a new project)
+	void setPresets(const std::string& name, const std::string& location,
+		const std::vector<std::string>& sourceFiles, const std::vector<std::string>& includePaths);
+
 signals:
 	void showPreferences();