fix: replaces strenum with mixin

[rileyok-ons]

📌 Replace StrEnum with enum

As strenum isn't supported in python 3.10, we are going to replace with a str and enum mixin, type checkers like this better too

✨ Summary

Replaces strenum with enum

📜 Changes Introduced

• Feature implementation (feat:) / bug fix (fix:) / refactoring (chore:) / documentation (docs:) / testing (test:)
• Updates to tests and/or documentation
• Terraform changes (if applicable)

✅ Checklist

Please confirm you've completed these checks before requesting a review.

• Code passes linting with Ruff
• Security checks pass using Bandit
• API and Unit tests are written and pass using pytest
• Terraform files (if applicable) follow best practices and have been validated (terraform fmt & terraform validate)
• DocStrings follow Google-style and are added as per Pylint recommendations
• Documentation has been updated if needed

🔍 How to Test

To test input valid strings into run_server() in the demo, also try seeing errors with non-valid strings, it should return an error message with allowed strings and your own, if it does work logs should only return on the given level

[frayle-ons]

Seems to work well to me!

the actual output when I pass in an unsupported string looks a little odd:

classifai.exceptions.DataValidationError: Invalid log level 'trivial'. Must be one of: [<LogLevel.DEBUG: 'debug'>, <LogLevel.INFO: 'info'>, <LogLevel.WARNING: 'warning'>, <LogLevel.ERROR: 'error'>, <LogLevel.CRITICAL: 'critical'>] (code=validation_error) | context={"log_level": "trivial"}

would we want it to not include all the "<LogLeve.INFO" type stuff and instead just present the list of available strings in a list like ['info', 'warning', 'error', 'etc'].

But its that's a hassle or if the current way is how its programmatically presented correctly then I think its fine too

[frayle-ons]

LGTM

classifai.exceptions.DataValidationError: Invalid log level 'trivial'. Must be one of: ['debug', 'info', 'warning', 'error', 'critical'] (code=validation_error) | context={"log_level": "trivial"}