EmbeddedControl implementation research #346

Hey! I was working on getting S5 sleep in my operating system, and my machine's AML seems to be running stuff from the embedded controller region when the \_PTS method is executed. I noticed a NoHandlerForRegionAccess(EmbeddedControl) error, and after digging through the source code it seems to me that this just isn't implemented yet.

It doesn't seem particularly simple to implement to me (although I haven't looked too far into it), so I was wondering if there's any resources or spec research that might be useful for someone trying to implement this. I am interested in contributing to more Rust osdev, so I'd be happy to do some research or aid in the implementation if that's something not too far in the weeds