override default bytes ser/de.

[pepyakin]

Serialize the byte vectors and arrays in hex format.
Extract serialization into its own crate (there is a reason why I did not go for a blanket primitives crate).
Rollkit uses base64 serialization, so it's logic also moved into that crate.

Closes #117

[pepyakin]

Current dependencies on/for this PR:

• main
  • PR follow up namespace type extension #125
    • PR override default bytes ser/de. #131 👈
    • PR shim cli query block #126
    • PR chore: update the repo URL #123
      • PR shim: update the wrong version message #130
        • PR chore: fix instruction for reseting state of gm #132
    • PR fix benchmarks #113
      • PR test storage_proof #114
        • PR weights update #129
    • PR Runtime Integration Test #111

This stack of pull requests is managed by Graphite.

[rphmeier]

i feel like we have written this piece of code for every project using RPC in the last few years