Initial OpenGL commit

src/test/example_gl.cpp

@@ -0,0 +1,26 @@
+#include <iostream>
+
+#include "uui/opengl/application.hpp"
+
+using namespace std;
+
+int main()
+{
+	cout << "Example Staring" << endl;
+
+	try
+	{
+		uui::GlApplication app;
+		app.add_window(800, 600, "Vulkan!");
+		app.add_window(600, 600, "Vulkan 2!");
+		app.run();
+	}
+	catch(const std::exception& error)
+	{
+		std::cerr << error.what() << std::endl;
+		return EXIT_FAILURE;
+	}
+
+	cout << "Example done" << endl;
+	return 0;
+}