feat: Fix pyright linting

[candiduslynx]

This is a follow-up for #134.

When running pyright against the generated alembic migrations, the reportAttributeAccessIssue is reported op.replace_entity, op.create_entity & op.drop_entity (maybe more, but I only use those).

[olirice]

I'd be open to a PR but this isn't something I have bandwidth for at the moment.

For now I'd recommend excluding your migrations directory from pylint

Added help wanted tag