Add smoke-test workflow

Author: gaggle

.github/workflows/smoke-test.yml

@@ -0,0 +1,21 @@
+name: Smoke Test
+
+on:
+  release:
+    types:
+      - "created"
+  workflow_dispatch:
+
+jobs:
+  smoke-test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: gaggle/elixir_script@v0
+        id: script
+        with:
+          script: |
+            IO.puts("Hello world")
+            "return"
+
+      - name: Get result
+        run: echo "${{steps.script.outputs.result}}"