add CI for examples dry run

.github/workflows/test_examples_dry_run.yaml

@@ -0,0 +1,15 @@
+name: Examples Dry Run
+on:
+  pull_request:
+    branches: [ "main" ]
+jobs:
+  build_test:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+    - name: Install python dependencies
+      run: |
+        python -m pip install -r requirements.txt
+    - name: Run examples
+      run: |
+        python3 example.py --dry-run