Add support for recarray UVParameters, needed for pyradiosky

[bhazelton]

Description

Add support for UVParameters containing recarrays. This is needed in pyradiosky, see RadioAstronomySoftwareGroup/pyradiosky#126.

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

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 tests to cover my new feature.
• All new and existing tests pass.
• I have updated the CHANGELOG.

[codecov]

Codecov Report

Merging #1334 (673a74a) into main (6c456ee) will increase coverage by 0.00%.
The diff coverage is 100.00%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1334   +/-   ##
=======================================
  Coverage   99.92%   99.92%           
=======================================
  Files          36       36           
  Lines       20015    20045   +30     
=======================================
+ Hits        19999    20029   +30     
  Misses         16       16           

Files Changed	Coverage Δ
pyuvdata/parameter.py	100.00% <100.00%> (ø)
pyuvdata/uvbase.py	100.00% <100.00%> (ø)

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[mkolopanis]

This is looking good to me. But I can't feel like I had a large hand in making it at the same time. maybe @jpober, @steven-murray, or @plaplant want to take a look?

[steven-murray]

This all looks reasonable