Add pre-commit

Signed-off-by: Cristian Le <cristian.le@mpsd.mpg.de>

Author: LecrisUT

.pre-commit-config.yaml

@@ -0,0 +1,25 @@
+repos:
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v4.4.0
+    hooks:
+      - id: check-added-large-files
+      - id: check-case-conflict
+      - id: check-merge-conflict
+      - id: check-symlinks
+      - id: check-yaml
+      - id: debug-statements
+      - id: end-of-file-fixer
+      - id: mixed-line-ending
+      - id: trailing-whitespace
+
+  - repo: https://github.com/psf/black
+    rev: 23.3.0
+    hooks:
+      - id: black
+
+  - repo: https://github.com/pycqa/flake8
+    rev: "6.0.0"
+    hooks:
+      - id: flake8
+        args:
+          - --max-line-length=120

pyproject.toml

@@ -46,6 +46,7 @@ test_cov = [
 ]
 dev = [
     "click-option-group[test]",
+    "pre-commit",
 ]
 docs = [
     'sphinx',
@@ -66,4 +67,4 @@ build.targets.wheel.packages = ['click-option-group']
 
 
 [tool.pytest.ini_options]
-testpaths = ["tests"]
+testpaths = ["tests"]