[RFC libinput] dox: switch to sphinx for the user-visible documentation

[Peter Hutterer]

On Tue, Jul 24, 2018 at 03:42:50PM +1000, Peter Hutterer wrote:
> Sending this out as patch even though what really matters is the
> output. Which is... here, tadaaa! 
> 
> https://people.freedesktop.org/~whot/libinput-rtd/

fwiw, I've played around with it a bit and updated the URL above. It now has
a proper hierarchy, more doxygen tags are being parsed.

There are still a few parsing issues that need to be fixed manually. And the
doc needs a general do-over to split it better into user docs vs developer
docs. And of course doxygen itself needs to be separated, generated, and
link to the sphinx docs. But otherwise this looks quite nice IMO.

Cheers,
   Peter