Change COMA API to have "use_instances" as keyword instead of "strategy"

[Archer6621]

Resolves #57

Examples and readme.md have also been adjusted.

[codecov-commenter]

Codecov Report

All modified lines are covered by tests ✅

Comparison is base (9d97d75) 85.28% compared to head (cadeb56) 85.28%.
Report is 4 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master      #60   +/-   ##
=======================================
  Coverage   85.28%   85.28%           
=======================================
  Files          36       36           
  Lines        1645     1645           
=======================================
  Hits         1403     1403           
  Misses        242      242           

Files	Coverage Δ
valentine/algorithms/coma/coma.py	87.14% <100.00%> (ø)
...lentine/algorithms/distribution_based/emd_utils.py	95.83% <100.00%> (ø)

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[kPsarakis]

The build for Python 3.12 now works on master. Try to rebase