Sync latest published documents to this repo

[ribose-jeffreylau]

Related: CalConnect/standards.calconnect.org#53

[ronaldtse]

@ribose-jeffreylau technically you can also sub-module all the other sources and compile the full set of documents here.

[ribose-jeffreylau]

I see. I'm wondering about the overlap with standards.calconnect.org. Since we are switching to metanorma site generate over there, which expects .adoc and the other input sources (e.g., images), I have been experimenting with adding the cc-* submodules in that repo.

If we do the submoduling of cc-* sources here, and compile the documents here, does that mean standards.calconnect.org will not have to run metanorma site generate?