Review Linter and Formatter Rules

[dragonejt]

From #55 (comment):

We should review the linter and formatter rules we want to apply to our project. In the example discussion above, we wanted variables names to stay lowercase, so we should add the rule that enforces lowercase variable names. Similarly, we should take a look at other format and code style rules we do want to enforce.

For reference, here is the list of Ruff rules: https://docs.astral.sh/ruff/rules/