Add ISO/IEC 18013-7 Annex C to protocol registry

[Willewragtag]

Include ISO/IEC 18013-7 Annex C in the presentation protocol registry.

Current draft: https://github.com/ISOWG10/ISO-18013/blob/main/Working%20Documents/Working%20Draft%20WG%2010_N2544_18013-7%20second%20edition%20DTS%20candidate%20-%20NTC.pdf

[marcoscaceres]

Amazing, thank you! We are currently working on defining the rules for inclusion:
#157

This will be the first official one! Here is the current list of rules:
https://pr-preview.s3.amazonaws.com/WICG/digital-credentials/pull/157.html#protocol-registry

And the change process:
https://pr-preview.s3.amazonaws.com/WICG/digital-credentials/pull/157.html#change-process

As some of the things are specific to how web browsers work, we are happy to guide you.

We might have some questions and/or require updates on the ISO side for inclusion.

[nadalin]

So in ISO case there may be free WGs published but the final TS or IS may not be free, so that would leave only prior outdated WD free and the TS/IS not free. I would suggest to avoid this that only the ISO TS/IS are included that meet all the requirements for the registry

[marcoscaceres]

Yeah, I agree... what I'm proposing elsewhere (link to the draft) is a pretty bad hack. We should reference the real thing, even if not public.

[nadalin]

Does Public = Free? I assume that Public does not mean that there is no IPR issues/claims, do items in the registry need to meet W3C IPR requirements?