164 add code formatting actions (#182)

* checking if autoformat action works

* correcting action trigger

.github/workflows/pep8_autoformat.yml

@@ -0,0 +1,45 @@
+name: Pep8
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  autopep8:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: autopep8
+        uses: peter-evans/autopep8@v2
+        with:
+          args: --recursive --in-place --aggressive --aggressive .
+
+      - name: Check for changes
+        id: check-changes
+        run: git diff --exit-code
+        continue-on-error: true
+
+      - name: Commit and push changes
+        # a failue of this step means changes were detected
+        if: steps.check-changes.outcome != 'success'
+        run: |
+          git config --global user.name "GitHub Actions"
+          git config --global user.email "actions@github.com"
+          git commit -am "Auto-format code using Clang-Format" || echo "No changes to commit"
+
+      - name: Push changes to main-autopep8 branch
+        if: steps.check-changes.outcome != 'success'
+        run: git push origin HEAD:main-autopep8
+
+      - name: Create Pull Request
+        if: steps.check-changes.outcome != 'success'
+        uses: peter-evans/create-pull-request@v6
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          commit-message: "Auto-format code using autopep8"
+          title: "Auto-format code by autopep8"
+          body: "This is an auto-generated PR with fixes by autopep8."
+          branch: main-autopep8