Final JOSS paper edits + additional minor features

[VChristiaens]

• Minor paper edits as per editor feedback
• Added function to define the independent apertures
• Added high-pass filtering option when searching for the optimal rescaling factor
• Variable renaming in bad pixel correction algorithms for consistency
• Solved deprecation issues

[codecov-commenter]

Codecov Report

Merging #568 (754f5db) into master (becfc49) will decrease coverage by 0.04%. The diff coverage is 65.30%.

@@            Coverage Diff             @@
##           master     #568      +/-   ##
==========================================
- Coverage   64.26%   64.22%   -0.04%     
==========================================
  Files          56       56              
  Lines       11799    11840      +41     
==========================================
+ Hits         7582     7604      +22     
- Misses       4217     4236      +19     

Impacted Files	Coverage Δ
vip_hci/preproc/rescaling.py	71.01% <50.00%> (-0.55%)	:arrow_down:
vip_hci/preproc/cosmetics.py	72.54% <60.00%> (-0.33%)	:arrow_down:
vip_hci/preproc/badpixremoval.py	62.66% <62.03%> (-0.55%)	:arrow_down:
vip_hci/metrics/snr_source.py	84.30% <78.26%> (+0.29%)	:arrow_up:
vip_hci/psfsub/pca_fullfr.py	59.47% <100.00%> (ø)
vip_hci/config/utils_conf.py	71.37% <0.00%> (+0.25%)	:arrow_up:

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