High-level convenience macro for initializing glfw, opening a window (given the optional window parameters),
setting the title given,
running setup-forms and then running forms in a loop, with calls to swap-buffers after each loop iteration.
The loop is in a block named do-window [so can be exited by a call to (return-from glfw:do-window)].
If the window is closed, the loop is also exited.