Introduce pylint tool

#400 (closed): Introduce pylint pre-commit hook
Set up pylint configuration in pyproject.toml
Set up pylint job
Solve found issues
- Try to remove not needed exceptions taken from DuniterPy configuration
- DeathReaper on 256_excluded branch
Add badge: not of a big value. Let’s not do it.

Edited Jun 28, 2022 by Moul

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