Add simple echo test action

Author: ashwin-ant

action.yml

@@ -0,0 +1,15 @@
+name: 'Simple Echo Test'
+description: 'A minimal action that echoes a message'
+branding:
+  icon: 'message-square'
+  color: 'blue'
+inputs:
+  message:
+    description: 'Message to echo'
+    required: false
+    default: 'Hello from GitHub Action!'
+runs:
+  using: 'composite'
+  steps:
+    - run: echo "${{ inputs.message }}"
+      shell: bash