Adds checks for applicable types to YAMLData*

[skrawcz]

Some fun facts:

Union[int, float, bool] == Union[(int, float, bool)]

So just needed to change the types to be a tuple
rather than a list, and then things work in a DRY way.

We could just want dict & list (since that is most likely from an actual user setting) -- you're likely not going to just save values, but in some sort of list or dict...

Changes

• yaml_extensions.py
• test_yaml_extenstions.py

How I tested this

• locally

Notes

Checklist

• PR has an informative and human-readable title (this will be pulled into the release notes)
• Changes are limited to a single goal (no scope creep)
• Code passed the pre-commit check & code is left cleaner/nicer than when first encountered.
• Any change in functionality is tested
• New functions are documented (with a description, list of inputs, and expected output)
• Placeholder code is flagged / future TODOs are captured in comments
• Project documentation has been updated if adding/changing functionality.