[RF] Improve scripts and import management

[skoudoro]

When running scripts (like dipy_horizon) , too many modules were imported which was not necessary.
This PR:

• clean this behavior
• remove unecessary import.
• remove the script folder (it is now in pyproject.toml)

[pep8speaks]

Hello @skoudoro, Thank you for updating !

Cheers ! There are no PEP8 issues in this Pull Request. 🍻

Comment last updated at 2023-12-11 05:45:46 UTC

[codecov]

Codecov Report

Merging #3002 (d88933c) into master (ca6268a) will increase coverage by 0.12%.
Report is 16 commits behind head on master.
The diff coverage is 41.17%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3002      +/-   ##
==========================================
+ Coverage   81.71%   81.84%   +0.12%     
==========================================
  Files         147      146       -1     
  Lines       20568    20505      -63     
  Branches     3279     3280       +1     
==========================================
- Hits        16808    16782      -26     
+ Misses       2932     2890      -42     
- Partials      828      833       +5     

Files	Coverage Δ
dipy/stats/analysis.py	92.10% <ø> (-0.21%)	⬇️
dipy/workflows/stats.py	85.61% <100.00%> (+0.69%)	⬆️
dipy/viz/horizon/app.py	45.55% <0.00%> (-0.25%)	⬇️
dipy/workflows/cli.py	42.85% <38.46%> (-8.62%)	⬇️

... and 10 files with indirect coverage changes

[Garyfallidis]

Nice work.