fix: specify the checking directories of mypy

[csbobby]

Add the complete mypy pre-commit-config to specify the mypy checking directories which avoids the pre-commit checking errors.

[mergify]

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🟢 Enforce conventional commit

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Make sure that we follow https://www.conventionalcommits.org/en/v1.0.0/

• title ~= ^(fix|feat|docs|style|refactor|perf|test|build|ci|chore|revert|release)(?:\(.+\))?:

[jakelorocco]

Closing in favor of: #243

I found a few other related issues. I gave you credit on the commit / changes you made.