The window subsystem.
This is the window subsystem adapted for
aeth-rs. It adapts [winit] to make it
work with the async task framework, and
drives the main UI loop. The user should
refer to [winit] for more usage information.
Please notice due to the implementation
of certain platform (e.g. iOS), according
to the [winit] authors, the event loop
may be a point-of-no-return, so this will
be the premise of designing this module.