Expanding WebXR Spec Acknowledgements

The WebXR Device API is the product of input from many talented people from
a variety of different backgrounds. Despite this, it was pointed out
recently that the spec's Acknowledgements section
<https://immersive-web.github.io/webxr/#ack> is rather anemic.

We don't want anyone's contributions to go uncredited! Unfortunately it's
not easy to track everyone who has participated, and even in the cases
where clear indications of contributions exist (such as GitHub pull
requests) they don't always contain the information we want to give proper
attribution, such as email addresses. As such, we're putting out a call for
anyone that has participated in the creation of the WebXR spec and would
like to be added to the acknowledgements section to let us know!

*Please fill out this brief form to get your name added.
<https://forms.gle/o2Lset81T8dQHeMk7> *

What counts as a "contribution" to the spec? We're pretty flexible on that,
and it generally boils down to if you feel like you've helped move the spec
forward in any capacity. Obviously if you've contributed pull requests to
the specification repo <https://github.com/immersive-web/webxr> that would
count as a contribution, but also participating in discussions online or on
the CG/WG calls, filing issues, helping with reviews, or assisting with
group administration are all examples of equally valid contributions.

Feel free to email any of the editors or chairs if you have further
questions. Adding the names that are submitted will be a manual process and
done in batches, so please allow some time for the spec to be updated after
submission.

Thank you, everyone, for helping create the Immersive Web!

--Brandon Jones