Allow hardware cursor while in pointer lock

[vans163]

We have been dealing with using chrome to provide a remote desktop experience, now with google stadia around the corner there are still some key features lacking in chromes Pointer Lock / event handling.

1 Pointer Lock cannot show the cursor while keeping the cursor inbounds, this is a hard requirement for responsive RDP.

1.1 Pointer Lock should also be able to lock the cursor inbounds + show it without going full screen.

! To be clear this allows a client side hardware cursor to be rendered but kept inbounds of an element, very important for remote software that requires edge panning.