Create main.yml

.github/workflows/main.yml

@@ -0,0 +1,11 @@
+name: hello-world
+on:
+  pull_request:
+    branches: [ "main" ]
+  merge_group:
+jobs:
+  my-job:
+    runs-on: ubuntu-latest
+    steps:
+      - name: my-step
+        run: echo "Hello World!"