Add pre-commit hook and improve with better linting

.gitlab-ci.yml

cookiecutter.json

project.gitlab-ci.yml

{{cookiecutter.project_slug}}/.dockerignore

{{cookiecutter.project_slug}}/.gitignore

{{cookiecutter.project_slug}}/.gitlab-ci.yml

{{cookiecutter.project_slug}}/.pre-commit-config.yaml

{{cookiecutter.project_slug}}/README.md

...okiecutter.project_slug}}/bin/install-hooks/pre-commit.sh

{{cookiecutter.project_slug}}/docker/ci-runner/Dockerfile

...ct_slug}}/docker/{{cookiecutter.project_slug}}/Dockerfile

{{cookiecutter.project_slug}}/pyproject.toml

{{cookiecutter.project_slug}}/requirements.txt

{{cookiecutter.project_slug}}/setup.cfg

{{cookiecutter.project_slug}}/setup.py

{{cookiecutter.project_slug}}/setup.sh

{{cookiecutter.project_slug}}/tests/requirements.txt

{{cookiecutter.project_slug}}/tox.ini