Saturation and bleed effects

[jorgemarpa]

This PR implements saturation and bleed effect on CCD type detectors that conserve charge and bleed along the columns, such as those in Kepler and TESS.

What's implemented:

• saturate_and_bleed() fucntion in utils.py which inputs prf_flux and detector well_depth and returns the version with saturation and bleed.
• Optional arguments in PRF.evaluate() to turn on the saturation effect, these are a boolean variable and a list of the expected flux of the targets which is needed to apply the effect.

Here are some examples to show that the scale of the bleed columns are consistent between model (first example) and data (second example).

Kepler

TESS

[jorgemarpa]

I'm trying to figure out why the action failed, it looks like poetry is failing to install fitsio==1.2.4. I saw that fitsio=1.4.2 fixed the wheels issue, but this one requieres python>3.10 which clashes with the current requierement in lkprf of python = ">=3.8.1,<4.0"
Do we have plans to update all lk related packages to python>3.10?

[jorgemarpa]

I pushed updates for:

• Using newer version of fitsio>1.3
• Added PRF saturation tests to pytest
• Upping minor version to 1.2.0