msys2-ucrt64 egl doesn't seem to be available

[maartenuni]

When running on windows, It becomes pretty hard to get egl to work. We use epoxy as an opengl egl extension loader. However,
to check that egl is available, you should call epoxy_has_egl(void); And this function returns false on windows.

So perhaps we can get this to work using the "Windows" EGL called WGL. Epoxy also seems to support WGL.