create action.yml

This action retrieves and displays a joke using an external API.

Author: raynnpjl

.github/actions/joke-action/action.yml

@@ -0,0 +1,7 @@
+name: "my joke action"
+
+description: "use an external API to retrieve and display a joke"
+
+runs:
+  using: "node16"
+  main: "main.js"