Add the graphics state enum to the callback, too. When we add support for different backends,
it would be nice if it didn't require an API change.
It's duplicated from Rust
because it doesn't provide values. The WebLG one doesn't make sense for C++ and
the proc address closure isn't ffi safe.
(It could be manually bridged thought)
This API allows specifying a callback that will be invoked when setting
up graphics (great for compiling shaders), before rendering a frame (but
after the clearning of the surface background), after rendering a frame
(before swapbuffers) and when releasing graphics resources.
This was a regression following the move to the edition 2021.
The CallbackUserData was not capture in the lamda, its member were moved.
So the destructor was called right after it was set.
We must make sure we capture the whole CallbackUserData, so put the callback
inside of it. This also reduce a bit of code duplication at the same time.
Test the callback invokation with statefull lambda
