More libraries

[makew0rld]

• https://github.com/hashberg-io/dag-cbor: Python, older, low stars
• https://github.com/Peergos/dag-cbor: the only Java dag-cbor implementation
  • Recently extracted into its own repo
  • Strictness is not enforced on decode and floats are disabled, apparently
  • See Java dag-cbor #8
• https://github.com/ipld/libipld: Rust, officially deprecated but has more stars