Add UVBeam support for the MWA Average Embedded Element (AEE) beam model

[bhazelton]

Description

The MWA Average Embedded Element (AEE) beam model is an older model, but it is widely used, so being able to compare it to the newer (and already supported) Full Embedded Element (FEE) beam model is important. The input files are totally different for these two models, so some real work was needed to add this support.

Motivation and Context

Types of changes

• 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 change)
• Documentation change (documentation changes only)
• Version change
• Build or continuous integration change
• Other

Checklist:

• I have read the contribution guide.
• My code follows the code style of this project.

New feature checklist:

• I have added or updated the docstrings associated with my feature using the numpy docstring format.
• I have updated the tutorial to highlight my new feature (if appropriate).
• I have added/updated tests to cover my new feature.
• I have updated the CHANGELOG.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.93%. Comparing base (eca9fb6) to head (bff52e3).

Additional details and impacted files

@@           Coverage Diff            @@
##             main    #1660    +/-   ##
========================================
  Coverage   99.93%   99.93%            
========================================
  Files          67       67            
  Lines       22706    22864   +158     
========================================
+ Hits        22692    22850   +158     
  Misses         14       14            

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