Add pre-commit hook and improve with better linting

.gitlab-ci.yml

@@ -24,6 +24,7 @@ build-template:
     - source ./setup.sh
     - git add .
     - git commit -m 'Test'
+    - git remote add origin git@git.astron.nl:templates/python-package-test
     - git push --dry-run -u origin test
     - rm -r .venv
     - rm -r .git