A/E survival fractions joint fitter and ecal fix

[ggmarshall]

Added new joint fitter for survival fractions which is in own file.
Improved A/E fitting so now more stable, enabling run to run corrections.
Added two new modes to the time correction: average_consecutive and interpolate_consecutive
Improved docstrings
Small tweaks to ecal: upper bound on sigma and some minor sigma guess changes to remove a few edge cases.

[codecov]

Codecov Report

Attention: Patch coverage is 65.46763% with 96 lines in your changes missing coverage. Please review.

Project coverage is 48.68%. Comparing base (981877e) to head (cf8b181).
Report is 9 commits behind head on main.

Files with missing lines	Patch %	Lines
src/pygama/pargen/AoE_cal.py	47.82%	48 Missing ⚠️
src/pygama/pargen/survival_fractions.py	74.15%	46 Missing ⚠️
src/pygama/pargen/energy_cal.py	75.00%	1 Missing ⚠️
src/pygama/pargen/extract_tau.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #591      +/-   ##
==========================================
- Coverage   48.80%   48.68%   -0.12%     
==========================================
  Files          59       60       +1     
  Lines        7846     7939      +93     
==========================================
+ Hits         3829     3865      +36     
- Misses       4017     4074      +57     

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[erin717]

We should consider moving the survival fraction code out of the A/E calibration script. It has enough general purpose utility beyond A/E to warrant being it's own thing.

[ggmarshall]

Yep I agree will move into own script

[ggmarshall]

@iguinn These changes should make A/E run by run corrections viable moving forward as well as cleaning up a couple of bugs and hopefully a more stable survival fraction calculation