ci: Create a sample test to run action under folder

.github/workflows/argilla-server/sample.workflow.yml

@@ -0,0 +1,18 @@
+name: CI Pipeline
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v2
+
+    - name: Say Hello
+      run: |
+        echo "Hello, world!"