[Idea] Add binary Deserializer

[WietseWind]

E.g.

https://explorer.xrplf.org/ledger_data

{
  "command": "ledger_data",
  "ledger_hash": "842B57C1CC0613299A686D3E9F310EC0422C84D3911E5056389AA7E5a808A93C8",
  "limit": 5,
  "binary": true
}