Add pre-commit

Author: mpasternak

.github/workflows/tests.yml

@@ -68,4 +68,5 @@ jobs:
           path: ~/.cache/pre-commit
           key: pre-commit|${{ env.pythonLocation }}|${{ hashFiles('.pre-commit-config.yaml') }}
       - run: python -m pip install -e .[dev]
+      - run: python -m pip install pre-commit
       - run: pre-commit run --show-diff-on-failure --color=always --all-files