Add simple test workflow

.forgejo/workflows/test.yml

@@ -0,0 +1,16 @@
+---
+name: Test Workflow
+
+on:
+  push:
+    branches: [main]
+  workflow_dispatch:
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Test step
+        run: |
+          echo "Hello from test workflow!"
+          echo "This is a simple test to verify CI is working."