chore: add linter and formatting checks and shortcuts

.github/workflows/pr.yml

@@ -0,0 +1,19 @@
+name: Run linter & formatting check
+
+on: [push, pull_request]
+
+jobs:
+  check-formatting:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: astral-sh/ruff-action@v1
+        with:
+          args: "check"
+
+      - uses: astral-sh/ruff-action@v1
+        with:
+          args: "format --check"
+

Makefile

@@ -24,3 +24,12 @@ clean:
 	find . -name '*.egg' -exec rm -f {} +
 	find . -name '*.pyc' -exec rm -f {} +
 	find . -name '*.pyo' -exec rm -f {} +
+
+lint-check:
+	ruff check
+
+format-check:
+	ruff format --check
+
+format:
+	ruff format