Recurring random unicode characters in .json files.

[augustjohnson]

Our json files occasionally get edited by stuff like pythons open() which sometimes results in weird character stuff.

Example of errant unicode showing up unwanted. https://github.com/open5e/open5e-api/pull/185/commits/6118e17e26ce3954d7ca4aaa661299738d4f396d

This is sometimes invisible to people editing the files (because of their editors and stuff).

Potential solutions:

• Tests (literally pytest tests) that check the files for a set of commonly messed up characters and fail if they show up.
• Pre-commit checks for unicode or something, I'm not sure exactly the specific scenario.
• Documentation on how to interact with the json files using python files plus maybe some examples?