create main.yml workflow

Signed-off-by: Dhruva Gole <goledhruva@gmail.com>

Author: DhruvaG2000

.github/workflows/main.yml

@@ -0,0 +1,16 @@
+on: [push]
+
+jobs:
+  hello_world_job:
+    runs-on: ubuntu-latest
+    name: A job to say hello
+    steps:
+      - name: Hello world action step
+        id: hello
+        uses: actions/arduino-core-testing
+        with:
+          who-to-greet: 'Mona the Octocat'
+      # Use the output from the `hello` step
+      - name: Get the output time
+        run: echo "The time was "
+