CBOR deterministic decoding for `Array` entries for `Collaborators` and `DocumentRefs` types.

[Mr-Leshiy]

Summary

Modify the cbork-utils::array::Array Decoding, to optionally apply From RFC 8949 Section 4.2.3 rule for array entries.

The keys in every map must be sorted in the following order:
///  1. If two keys have different lengths, the shorter one sorts earlier;
///  2. If two keys have the same length, the one with the lower value in (byte-wise)
///     lexical order sorts earlier."

So the CBOR array become deterministically sorted.

Apply these freshly added CBOR decoding rules for Collaborators and DocumentRefs.
This would imply for the same set of data, having the deterministic binary representation.

Description

• Add a new option for DecodeCtx

pub enum DecodeCtx {
    /// Decode a CBOR object applying deterministic decoding rules (RFC 8949
    /// Section 4.2).
    /// Additional apply `RFC 8949 Section 4.2.3` for array entries, so it become deterministically sorted.
    ArrayDeterministic,
   ...
}

• Apply this new decoding rules for Collaborators and DocumentRefs types