ci: deploy astyle

Signed-off-by: Frederic Pillon <frederic.pillon@st.com>

Author: fpistm

.github/workflows/astyle.yml

@@ -0,0 +1,15 @@
+name: astyle
+on: [push, pull_request]
+jobs:
+  astyle:
+    name: Check code formatting
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@main
+      - uses: stm32duino/actions/astyle-check@main
+      # Use the output from the `Astyle` step
+      - name: Astyle Errors
+        if: failure()
+        run: |
+          cat ${{ steps.Astyle.outputs.astyle-result }}
+          exit 1