Combine the configurations of linters and code formatters in one place

[mikhailofff]

Now we have like

...
[tool.isort]
line_length = 120

[tool.black]
line-length = 120
...

in pyproject.toml

besides

...
args: [--max-line-length=120]
...

for flake8 in pre-commit-config.yaml.

So, either configure max-line-length in pyproject.toml or move line_length for isort and line-length for black to pre-commit-config.yaml.