Added basic lua wrapper, currently can't retrieve from registry

src/lua.h

@@ -0,0 +1,20 @@
+#pragma once
+
+#include <psyqo-lua/lua.hh>
+
+#include "gameobject.hh"
+
+namespace psxsplash {
+class Lua {
+  public:
+    void Init();
+    
+    void LoadLuaFile(const char* code, size_t len);
+    void RegisterGameObject(GameObject* go);
+    void CallOnCollide(GameObject* self, GameObject* other);
+
+  private:
+    void PushGameObject(GameObject* go);
+    psyqo::Lua L;
+};
+}  // namespace psxsplash