ci(pre-commit): add commitizen to pre-commit config

Author: Lee-W

.pre-commit-config.yaml

@@ -9,6 +9,13 @@ repos:
         args: [--markdown-linebreak-ext=md]
       - id: debug-statements
       - id: no-commit-to-branch
+
+  - repo: https://github.com/Woile/commitizen
+    rev: v1.23.0
+    hooks:
+      - id: commitizen
+        stages: [commit-msg]
+
   - repo: local
     hooks:
       - id: reformat

docs/contributing.md

@@ -11,7 +11,7 @@ If you're a first-time contributor, you can check the issues with [good first is
 1. Fork [the repository](https://github.com/commitizen-tools/commitizen).
 2. Clone the repository from your GitHub.
 3. Setup development environment through [poetry](https://python-poetry.org/) (`poetry install`).
-4. Setup [pre-commit](https://pre-commit.com/) hook (`pre-commit install -t pre-commit -t pre-push`)
+4. Setup [pre-commit](https://pre-commit.com/) hook (`pre-commit install -t pre-commit -t pre-push -t commit-msg`)
 5. Check out a new branch and add your modification.
 6. Add test cases for all your changes.
    (We use [CodeCov](https://codecov.io/) to ensure our test coverage does not drop.)