Add a pre-commit setup.

Author: Julian

.pre-commit-config.yaml

@@ -0,0 +1,32 @@
+repos:
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v4.3.0
+    hooks:
+      - id: check-ast
+      - id: check-docstring-first
+      - id: check-toml
+      - id: check-vcs-permalinks
+      - id: check-yaml
+      - id: debug-statements
+      - id: end-of-file-fixer
+      - id: mixed-line-ending
+        args: [--fix, lf]
+      - id: trailing-whitespace
+  - repo: https://github.com/PyCQA/isort
+    rev: 5.10.1
+    hooks:
+      - id: isort
+  - repo: https://github.com/pycqa/flake8
+    rev: '5.0.4'
+    hooks:
+      - id: flake8
+  - repo: https://github.com/asottile/pyupgrade
+    rev: v2.38.2
+    hooks:
+      - id: pyupgrade
+  - repo: https://github.com/psf/black
+    rev: 22.8.0
+    hooks:
+      - name: black
+        id: black
+        args: ["--line-length", "79"]