Adds main.yaml

Signed-off-by: Shakar <5h4k4r.b4kr@gmail.com>

.github/workflows/main.yaml

@@ -0,0 +1,20 @@
+name: Test Action
+
+on: [push]
+
+jobs:
+  hello-world-job:
+    runs-on: ubuntu-latest
+    name: A job to say hello
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Hello world action step
+        uses: ./github/actions/action.yaml
+        id: hello
+        with:
+          who-to-greet: "John"
+
+      - name: Print the greeting's output
+        run: echo "The greeting was ${{ steps.hello.outputs.greeting }}"