Create first-action.yml simple basic action

Author: advalgo

.github/workflows/first-action.yml

@@ -0,0 +1,10 @@
+name: First Workflow
+on: workflow_dispatch
+jobs:
+  first-job:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Print Greeting
+        run: echo "Hello world!"
+      - name: Print goodbye
+        run: echo "Goodbye!"