Add CI linting with ruff and pyproject.toml config

Add ruff check step to CI before deploy. Configure ruff for Python 3.10
with E/F/W/I rule selection and 120 char line length.

Author: manascb1344

.github/workflows/ci-cd.yml

@@ -36,6 +36,11 @@ jobs:
           python -m pip install --upgrade pip
           pip install modal httpx fastapi
 
+      - name: Lint with ruff
+        run: |
+          pip install ruff
+          ruff check app.py
+
       - name: Deploy job
         run: |
           modal deploy app.py

pyproject.toml

@@ -0,0 +1,6 @@
+[tool.ruff]
+target-version = "py310"
+line-length = 120
+
+[tool.ruff.lint]
+select = ["E", "F", "W", "I"]