Add more linters/code-quality tools

**Is your feature request related to a problem? Please describe.**

Consider adding more linters, e.g.:

~- [ ] `darglint`~
~- [ ] `pylint`~
~- [ ] `flake8-eradicate`~
~- [x] ~`flake8-isort`~ (done #60)~
- [ ] [`radon`](https://github.com/rubik/radon)
- [ ] [`ruff`](https://github.com/astral-sh/ruff)
- [x] ~`safety`~ (done #60)
- [x] ~`bandit`~ (done #60)

Also consider integration with other code-scan services, e.g.:
- [ ] [Codacy](https://www.codacy.com/)
- [ ] [Fossa](https://fossa.com/)

**Describe the solution you'd like**
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**Describe alternatives you've considered**

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**Additional context**

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