Exozodi fix

[CoreySpohn]

Describe your changes

Overhaul of the exozodiacal light modeling to correctly calculate the color factor, update for observations, and use proper equations.

• SU.fEZ attribute removed. Because the EZ calculations are mode specific this is now in TargetList.
• Created TL.JEZ0 dictionary attribute. Structured similar to star_fluxes, it is keyed by the mode hex values and contains the exozodi intensity values for each star in the observing mode, with $r=1AU$ and $n_\text{zodi}=1$.
• Created SU.scale_JEZ(sInd, mode) method. This should be invoked after SU.propag_system is called. It gets the JEZ0 value for the mode/star and scales by SU.nEZ/SU.d**2 to turn the star's JEZ0 value into a per-planet value at the current epoch.
• The JEZ0 calculations use the TL.systemInclination values when scaling by inclination instead of the planet values
  • Note, this could be handled the same as the nEZ and 1/r^2 terms, not sure why this was per-planet instead of a per-disk value though
• Followed TODO of moving the ZL attribute "commonSystemfEZ" into SimulatedUniverse (since it has to be set there).
  • Set commonSystemnEZ as an input for SU (defaults to True)
  • Created an SU.nEZ array attribute which holds the number of exozodi for each planet in the simulation
  • Defined nEZ as a planet attribute (instead of fEZ) for loading/dumping
  • SU.nEZ is defined in SU.gen_physical_properties() using the existing ZL.gen_systemnEZ(nStars) method
• Removed fEZ as an output from dump_system_params as the current treatment of it is mode-dependent.
• Updated OpticalSystem methods, notably Cp_Cb_Csp_helper to use JEZ values for the exozodi count rate
• Updated the exozodi calculation documentation in the Fundamental Concepts page
• In SS.observation_detection the self.calc_signal_noise is given the JEZ values for each epoch
• SS.observation_detection and observation_characterization now return JEZ, previously the fEZ was included in the systemParamss dict created by SU.dump_system_param.
  • Note: JEZ being mode dependent means that it shouldn't be treated as a "system parameter" in the same way that dMag, WA, distance, etc are.
• Modified the SS.last_detected array calls in the prototype to correctly include JEZ.
• Adjusted the DRM to save det_JEZ instead of det_fEZ.
• Added directory .venv to gitignore
• Updated all SurveySim modules fEZ to use JEZ
• Updated test modules to use JEZ
• Updated Completeness calculations to use JEZ
• Probably some minor formatting changes due to ruff

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

All of the above

Reference any relevant issues (don't forget the #)

#374 and might also address #183 although it isn't directly an input

Checklist before requesting a review

• I have verified that all unit tests pass in a clean virtual environment and added new unit tests, as needed
• I have run e2eTests and added new test scripts, as needed
• I have verified that all docstrings are properly formatted and added new documentation, as needed