Moving draft-iab-protocol-maintenance forward

[tfpauly]

What should we do with this document?

https://datatracker.ietf.org/doc/draft-iab-protocol-maintenance/

[tfpauly]

Last program call was interested in moving this forward. David will take a pass.

[DavidSchinazi]

Will do!

[DavidSchinazi]

I read through the document and filed some number of PRs and issues. Let's discuss over there.