Add test Forgejo Actions workflow

.forgejo/workflows/test.yml

@@ -0,0 +1,16 @@
+name: Test CI
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  test:
+    runs-on: docker
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Echo Test
+        run: echo "Forgejo Actions is working"