feat: add pre-commit

.pre-commit-config.yaml

@@ -0,0 +1,14 @@
+repos:
+  - repo: https://github.com/PyCQA/isort
+    rev: 6.0.1
+    hooks:
+      - id: isort
+  - repo: https://github.com/psf/black-pre-commit-mirror
+    rev: 25.1.0
+    hooks:
+      - id: black
+        language_version: python3
+  - repo: https://github.com/PyCQA/flake8
+    rev: 7.1.2
+    hooks:
+      - id: flake8

readme.md

@@ -117,3 +117,17 @@ user.save()
 ```
 
 8. You can now access the /admin page.
+
+## Setup pre-commit
+
+PyLadiescon-portal uses a tool called [pre-commit](https://pre-commit.com/) to enforce coding standard and styles. To enable pre-commit, run:
+
+```
+pre-commit install
+```
+
+### Pre-commit automatically runs during the commit
+
+With pre-commit installed as a git hook for verifying commits, the pre-commit hooks configured in `.pre-commit-config.yaml` for PyLadiescon-portal must all pass before the commit is successful. If there are any issues found with the commit, this will cause your commit to fail. Where possible, pre-commit will make the changes needed to correct the problems it has found. 
+
+You can then re-add any files that were modified as a result of the pre-commit checks, and re-commit the change.

requirements-dev.txt

@@ -9,3 +9,4 @@ pytest-django==4.8.0
 pytest==8.3.5
 pytest-cov==6.1.1
 coverage==7.7.0
+pre_commit==4.2.0