[MAINT] use python to create dummy data

[Remi-Gau]

• closes [INFRA] tests will not run on Windows #632
• closes [MNT] use python instead of bash to create dummy dataset  #791

[codecov]

Codecov Report

Merging #1143 (45e7d5c) into main (9c649e1) will decrease coverage by 41.16%.
Report is 1 commits behind head on main.
The diff coverage is n/a.

@@             Coverage Diff             @@
##             main    #1143       +/-   ##
===========================================
- Coverage   79.58%   38.43%   -41.16%     
===========================================
  Files         287        4      -283     
  Lines        7764      255     -7509     
  Branches       40       40               
===========================================
- Hits         6179       98     -6081     
+ Misses       1569      141     -1428     
  Partials       16       16               

Flag	Coverage Δ
cli	38.43% <ø> (ø)
macos-latest_matlab-R2023a_fast	?
macos-latest_matlab-R2023a_slow	?
octave	?
ubuntu-latest_matlab-R2023a_fast	?
ubuntu-latest_matlab-R2023a_slow	?

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see 283 files with indirect coverage changes

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