Reference CCSDS materials leveraged

[mkolopanis]

Want to log the reference material used for this, and when updated, reference which materials align with new versions

Base version built against:

https://ccsds.org/Pubs/720x1g4.pdf
https://ccsds.org/Pubs/720x4y1.pdf
https://ccsds.org/Pubs/727x0b5e1.pdf