add new struct and events

example/layers/ui_layer/ui_layer.hpp

@@ -0,0 +1,15 @@
+#pragma once
+
+#include <VE.hpp>
+
+namespace sandbox
+{
+  class ui_layer : public VE::layer, public VE::flags
+  {
+    VE_OVERIDE();
+
+    ImVec2 m_size = ImVec2{ 400.f, 400.f };
+    ImVec2 m_pos = ImVec2{ 400.f, 400.f };
+  };
+}
+