implement plot_residuals setting

[henrikjacobsenfys]

Closes #184

[codecov]

Codecov Report

❌ Patch coverage is 4.87805% with 39 lines in your changes missing coverage. Please review.
✅ Project coverage is 97.06%. Comparing base (556b95f) to head (5938a4f).

Files with missing lines	Patch %	Lines
src/easydynamics/analysis/analysis1d.py	4.76%	17 Missing and 3 partials ⚠️
src/easydynamics/analysis/analysis.py	5.00%	13 Missing and 6 partials ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #197      +/-   ##
===========================================
- Coverage    98.13%   97.06%   -1.07%     
===========================================
  Files           51       51              
  Lines         3542     3583      +41     
  Branches       652      663      +11     
===========================================
+ Hits          3476     3478       +2     
- Misses          36       66      +30     
- Partials        30       39       +9     

Flag	Coverage Δ
integration	44.45% <4.87%> (-0.46%)	⬇️
unittests	96.95% <4.87%> (-1.07%)	⬇️

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