feat: Add Serialize and DeserializeSeed support

[lmondada]

This PR is ready to be reviewed/merged if we choose to go down this route.

See discussion https://github.com/CQCL/hugr/issues/2253

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 77.83019% with 47 lines in your changes missing coverage. Please review.

Project coverage is 81.98%. Comparing base (2ac4181) to head (6b95519). Report is 15 commits behind head on main.

Files with missing lines	Patch %	Lines
hugr-core/src/hugr/persistent/serialize.rs	76.51%	18 Missing and 17 partials :warning:
...gr-core/src/hugr/patch/simple_replace/serialize.rs	73.33%	3 Missing and 5 partials :warning:
hugr-core/src/hugr/serialize/serde_seed.rs	87.87%	3 Missing and 1 partial :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2258      +/-   ##
==========================================
- Coverage   82.00%   81.98%   -0.02%     
==========================================
  Files         237      240       +3     
  Lines       42778    42990     +212     
  Branches    38690    38902     +212     
==========================================
+ Hits        35079    35247     +168     
- Misses       5706     5727      +21     
- Partials     1993     2016      +23     

Flag	Coverage Δ
python	85.34% <ø> (ø)
rust	81.63% <77.83%> (-0.02%)	:arrow_down:

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[lmondada]

Superseded by https://github.com/CQCL/hugr/pull/2300