Add affine color correction function

[JorgeGtz]

Describe your changes
Added the color correction function based on an affine transformation in the RGB space (3D). The way this model affects the colors' dynamic is limited (see affine transformation) but it is less likely to create color artifacts.

Type of update
Is this a:

• New feature or feature enhancement

Associated issues

Additional context
The current color correction function is more flexible and can change the dynamics of the colors in more ways than using an affine model. The disadvantage is that this model can cause odd colors as a byproduct of better match the color card values.

For the reviewer
See this page for instructions on how to review the pull request.

• PR functionality reviewed in a Jupyter Notebook
• All tests pass
• Test coverage remains 100%
• Documentation tested
• New documentation pages added to plantcv/mkdocs.yml
• Changes to function input/output signatures added to updating.md
• Code reviewed
• PR approved

[codecov]

Codecov Report

Merging #1150 (325ce28) into 4.x (298785d) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##               4.x     #1150    +/-   ##
==========================================
  Coverage   100.00%   100.00%            
==========================================
  Files          164       161     -3     
  Lines         7531      6890   -641     
==========================================
- Hits          7531      6890   -641     

Flag	Coverage Δ
unittests	100.00% <100.00%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
plantcv/plantcv/transform/__init__.py	100.00% <100.00%> (ø)
plantcv/plantcv/transform/color_correction.py	100.00% <100.00%> (ø)

... and 10 files with indirect coverage changes