Based on urbit-ob, supports only the @q format.
Note that when encoding more than one byte, encode pads from the beginning to
an even number (as per the original implementation) and decode ignores any
dashes or spaces within the string.
rust
urbit_q::encode(&[1]); // nec
let string = urbit_q::encode(&[1, 2, 3]); // doznec-binwes
urbit_q::decode(&string).unwrap(); // [0, 1, 2, 3]
urbit_q::decode("doz nec bin wes"); // Some([0, 1, 2, 3])
urbit_q::decode("do-z ne cb inwes"); // Some([0, 1, 2, 3])
urbit_q::decode("hello world"); // None