Changed plot_stamps from html to matplotlib, changed mask to psf

[ale-munozarancibia]

Description

This PR changes the multisurvey plot_stamps function from html to matplotlib, because of known problems of the html display on notebooks shown in github and colab. It also renames the include_variance_and_mask flag to include_variance_and_psf, because the third image cutouts plane is PSF and not a mask.

How Has This Been Tested?

Manually in example notebooks

[codecov]

Codecov Report

❌ Patch coverage is 25.00000% with 12 lines in your changes missing coverage. Please review.
✅ Project coverage is 81.27%. Comparing base (395d526) to head (b9b1e43).
⚠️ Report is 3 commits behind head on main.

Files with missing lines	Patch %	Lines
alerce/ms_stamps.py	25.00%	12 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #69      +/-   ##
==========================================
- Coverage   81.92%   81.27%   -0.66%     
==========================================
  Files          12       12              
  Lines         747      753       +6     
==========================================
  Hits          612      612              
- Misses        135      141       +6     

Files with missing lines	Coverage Δ
alerce/common_stamps.py	75.00% <ø> (ø)
alerce/ms_stamp_utils.py	80.00% <ø> (+8.57%)	⬆️
alerce/ms_stamps.py	53.84% <25.00%> (-3.45%)	⬇️

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