feat: add deterministic relation id

[nikgraf]

This is an experiment demonstrating how we could generate deterministic relation IDs based on from, to and entity

How it works:

1. Combines the IDs and appends an attempt counter
2. Hashes the result
3. Creates a UUID4 from the first 16 bytes of the hash
4. Encode to Base58 and return if 22 chars - otherwise goes back to step one with an increased counter

Note: Do not merge until we decided if we want random or deterministic relation IDs.