Inclusion of IROLL, IPCA, NEGFD routines and new features to NEGFC routines

[VChristiaens]

Additional changes:

• new options for speckle-based and cross-correlation based recentering routines;
• updated automated tests
• bug fix related to left eigenvectors in pca_annular
• more complete docstrings

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 18.36420% with 1587 lines in your changes are missing coverage. Please review.

Project coverage is 34.77%. Comparing base (8c3268e) to head (2fca4a0).

Files	Patch %	Lines
vip_hci/fm/negfd_simplex.py	4.56%	293 Missing ⚠️
vip_hci/greedy/ipca_fullfr.py	0.00%	238 Missing ⚠️
vip_hci/greedy/inmf_fullfr.py	0.00%	236 Missing ⚠️
vip_hci/fm/negfd_fmerit.py	5.97%	126 Missing ⚠️
vip_hci/greedy/iroll.py	0.00%	87 Missing ⚠️
vip_hci/fm/negfd_interp.py	7.78%	83 Missing ⚠️
vip_hci/psfsub/rollsub.py	25.89%	83 Missing ⚠️
vip_hci/fm/utils_negfd.py	8.43%	76 Missing ⚠️
vip_hci/preproc/recentering.py	55.12%	57 Missing ⚠️
vip_hci/preproc/rescaling.py	60.90%	52 Missing ⚠️
... and 22 more

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Additional details and impacted files

@@             Coverage Diff             @@
##           master     #628       +/-   ##
===========================================
- Coverage   57.46%   34.77%   -22.69%     
===========================================
  Files          67       87       +20     
  Lines       13535    16365     +2830     
===========================================
- Hits         7777     5690     -2087     
- Misses       5758    10675     +4917     

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