STreaming ARchive format: simpler, stricter, smaller than CARs for a subset of use-cases.

Generic STAR-lite changes for spaces #14

Merged bad-example.com
targeting main from star-lite-v1-generic
Merged opened by and assigned to bad-example.com
targeting main from star-lite-v1-generic

WIP

Commits 8

drop format-level lex-key-ordering requirement
edits for new feedback
small consistency stuff
fix structure and more cleanup
fix up rules
more examples
edits for clarity and open questions
first pass at generic STAR-lite changes for spaces