Enumerative algorithm for synthesis

[alcides]

This PR introduces a new SearchAlgorithm: EnumerativeSearch.

It uses generators to yield all individuals that are possible in the grammar, via BFS (smaller individuals first).

• Core algorithm
• iterate for all Metahandlers
• support for dependent types.

[codecov]

Codecov Report

Attention: Patch coverage is 81.77778% with 41 lines in your changes missing coverage. Please review.

Project coverage is 89.11%. Comparing base (aa263bd) to head (84a7e36).
Report is 82 commits behind head on main.

Files with missing lines	Patch %	Lines
geneticengine/algorithms/enumerative.py	75.94%	19 Missing ⚠️
geneticengine/grammar/metahandlers/strings.py	36.36%	7 Missing ⚠️
geneticengine/grammar/metahandlers/floats.py	33.33%	4 Missing ⚠️
geneticengine/algorithms/gp/operators/selection.py	25.00%	3 Missing ⚠️
geneticengine/grammar/metahandlers/ints.py	77.77%	2 Missing ⚠️
geneticengine/representations/tree/operators.py	60.00%	2 Missing ⚠️
...neticengine/algorithms/gp/operators/combinators.py	50.00%	1 Missing ⚠️
geneticengine/algorithms/one_plus_one.py	66.66%	1 Missing ⚠️
geneticengine/grammar/metahandlers/vars.py	66.66%	1 Missing ⚠️
geneticengine/representations/common.py	50.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #251      +/-   ##
==========================================
+ Coverage   89.10%   89.11%   +0.01%     
==========================================
  Files          90       91       +1     
  Lines        4717     4816      +99     
==========================================
+ Hits         4203     4292      +89     
- Misses        514      524      +10     

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[alcides]

Closes #151.