pch migration to modules [wip]

gl/fence.cppm

@@ -0,0 +1,27 @@
+module;
+#include "glad/glad.h"
+
+export module eu07.gl.fence;
+import eu07.gl.object;
+
+export {
+
+
+namespace gl
+{
+    class fence
+    {
+        GLsync sync;
+
+    public:
+        fence();
+        ~fence();
+
+        bool is_signalled();
+
+        fence(const fence&) = delete;
+        fence& operator=(const fence&) = delete;
+    };
+}
+
+}  // export