Add stimulus details to CSV export

[celefthe]

Closes #252

[codecov]

Codecov Report

Attention: Patch coverage is 76.92308% with 6 lines in your changes missing coverage. Please review.

Project coverage is 79.44%. Comparing base (6e04f04) to head (3439623).
Report is 7 commits behind head on main.

Files with missing lines	Patch %	Lines
src/visiomode/webpanel/export.py	75.00%	6 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #254      +/-   ##
==========================================
- Coverage   79.73%   79.44%   -0.29%     
==========================================
  Files          31       31              
  Lines        1727     1732       +5     
==========================================
- Hits         1377     1376       -1     
- Misses        350      356       +6     

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