Add code formatting CI workflow

- Created new GitHub Actions workflow 'code-formatting.yml' that runs the formatting script
- Workflow checks if code meets formatting standards and fails if any changes are needed
- Updated pull_request.yml to include the new formatting check
- Ensures PRs cannot be merged until code passes formatting checks

Author: strickvl

.github/workflows/code-formatting.yml

@@ -0,0 +1,42 @@
+name: Code Formatting
+
+on:
+  pull_request:
+    types: [opened, synchronize]
+  push:
+    branches:
+      - main
+
+jobs:
+  formatting-check:
+    name: Code Formatting Check
+    runs-on: ubuntu-latest
+    if: github.event.pull_request.draft == false
+    env:
+      ZENML_DEBUG: 1
+      ZENML_ANALYTICS_OPT_IN: false
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+      
+      - name: Set up Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: '3.9'
+      
+      - name: Install ruff
+        run: pip install ruff
+      
+      - name: Run formatting script
+        run: bash scripts/format.sh
+        
+      - name: Check for changes
+        id: git-check
+        run: |
+          git diff --exit-code || echo "changes=true" >> $GITHUB_OUTPUT
+        
+      - name: Fail if changes were made
+        if: steps.git-check.outputs.changes == 'true'
+        run: |
+          echo "::error::Formatting check failed. Please run 'scripts/format.sh' locally and commit the changes."
+          exit 1

.github/workflows/pull_request.yml

@@ -1,4 +1,4 @@
-name: Spell Checking
+name: Pull Request Checks
 
 on:
   pull_request:
@@ -25,3 +25,7 @@ jobs:
   markdown-link-check:
     uses: ./.github/workflows/markdown-link-check.yml
     if: github.event.pull_request.draft == false
+    
+  code-formatting-check:
+    uses: ./.github/workflows/code-formatting.yml
+    if: github.event.pull_request.draft == false