Reorganize files

[joaquimg]

replaces #36

[codecov]

Codecov Report

Attention: Patch coverage is 98.50047% with 16 lines in your changes missing coverage. Please review.

Project coverage is 98.41%. Comparing base (0f117a7) to head (b25642b).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/Numerical/analyze.jl	96.72%	11 Missing ⚠️
src/Feasibility/analyze.jl	97.78%	5 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #40   +/-   ##
=======================================
  Coverage   98.41%   98.41%           
=======================================
  Files           7       13    +6     
  Lines        1384     1384           
=======================================
  Hits         1362     1362           
  Misses         22       22           

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