IDC documentation

I mentioned the work on documentation in the past, but over the past weeks there have been more progress, and we may go live next week, so I wanted to share this again.

Documentation is here (this is a read-only non-public link, please do not reshare for now - once we are live, docs will be at https://learn.canceridc.dev).

If anyone has feedback on what is missing, or (even better) is willing to volunteer to improve or contribute relevant content - please respond! I will email the edit link separately to the team mailing list (since it will grant “write” access to anyone with the link).