test: migrate test suite from GTest to Catch2

[ArthurVasseur]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 99.67159% with 4 lines in your changes missing coverage. Please review.
✅ Project coverage is 81.00%. Comparing base (bc03b8b) to head (f618234).
⚠️ Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
Src/Tests/ThreadPool.cpp	99.33%	1 Missing and 1 partial ⚠️
Src/Tests/FunctionRef.cpp	96.66%	1 Missing ⚠️
Src/Tests/SparseVector.cpp	99.12%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #13      +/-   ##
==========================================
+ Coverage   77.31%   81.00%   +3.68%     
==========================================
  Files          72       72              
  Lines        2967     3500     +533     
  Branches      321      320       -1     
==========================================
+ Hits         2294     2835     +541     
+ Misses        648      641       -7     
+ Partials       25       24       -1     

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