Merge branch 'feat-lint-tool-config' into 'master'

Add linting tools configuration

See merge request rc/self-reg-form!35

.flake8

+[flake8]
+count = True
+max-line-length = 79
+show-source = True
+statistics = True
+exclude =
+    .git,
+    __pycache__,
+    venv

pyproject.toml

+[tool.black]
+line-length = 79
+target-version = ['py36']
+preview = true
+[tool.pylint.main]
+disable = ["import-error", "unused-argument", "broad-except"]
+[tool.pylint.format]
+max-line-length = 79