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

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Additional details and impacted files

```diff @@ 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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