Bax integration for Badger visual extension

[MitchellAV]

Fixes various issues with Bax Generator so that is can be used within badger extension

• class name should use Field class with frozen=True
• changes various names to be more appropriate
• added algorithm validation
  both _supported_algorithms as well as algorithms outside of Xopt can be used as long as they have a class_path that points to the module
• various type hinting improvements (not fully complete)

[MitchellAV]

@dylanmkennedy Verify that each of these changes I needed to make still work with the bax algorithms separate repository

[codecov]

Codecov Report

❌ Patch coverage is 99.15254% with 1 line in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
xopt/generators/bayesian/bax_generator.py	97.50%	0 Missing and 1 partial ⚠️

📢 Thoughts on this report? Let us know!

[dylanmkennedy]

These changes work with bax_algorithms. Mitchell and I have verified that these changes are both necessary and sufficient BAX/Badger integration.