PROJECT: Register IANA Tags

[ChristopherA]

#SUBPROJECTS

Have the high numbers been picked? Are we done?

https://www.iana.org/assignments/cbor-tags/cbor-tags.xhtml

Document what the tags are.
Document as WIP.

## Mail to Dispatch First for Advice
- [x] Look at archives on Mailing List for similar emails
- [x] When do drafts close before March event?
- [x] Ask to get on schedule for Mid-March Meeting (March 25 to March 31)
- [x] Ask how to get in contact with other groups (supply chain, CBOR, JSON)
- [x] What is advice for IANA tags (register or wait for working group endorsement)
- [x] Let them that we've drafted stuff, but that we're open to suggestions.

Also See https://hackmd.io/BQMOySc9S_67Z2BeTHrCXw for a similar letter

- [x] Update IETF I-D to 02 with SHA256 tests (@wolfmcnally)

## Register CBOR Objects
- [x] When? before March IETF?
- [x] Pick 1 or 2 URs for 300s
- [x] Submit 7 Core for Envelope
- [ ] Bring Up in CBOR Meeting (May 17th)
- [ ] Check Status (May 23rd or 24th)
- [ ] Submit crypto-message to IETF
- [ ] Submit Other 300s for URs