#95/chore/check new linter ruff

[YoshikiKubotani]

Issue URL

Close: #95

Change overview

• Add the new linter ruff written in Rust, and remove flake8 and isort from dev dependencies
• Update the python libraries listed on dev dependencies

[Add changes below on 2024/04/27]

• Replace black with Ruff formatter (released as of v0.1.2)
• Add the recommended Ruff linter rules compatible with Ruff formatter [link]
• Remove .flake8 file
• Describe how to loosen the rules of Ruff in README.md
• Update README.md representation

How to test

• Make sure to work make ruff, make ruff-check under the core container
• Make sure to run make format with no warnings under the core container

Note for reviewers

N/A

[gatheluck]

LGTM!!

[gatheluck]

@YoshikiKubotani
CI is raising error. Can you fix it?

[gatheluck]

I added one commend about README.md, except that part LGTM!