Additional MLRs Update

[ahnikagee]

Describe your changes

Adding more mass luminosity relationships for the user to select. Addition of Henry1993+1999, Fernandes2021 and Fang2010.

Type of change

• New feature (non-breaking change which adds functionality)
• This change requires a documentation update

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

Checklist before requesting a review

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