Added Forgejo Actions workflow.

.forgejo/workflows/test.yml

@@ -0,0 +1,15 @@
+name: Test Runner
+
+on:
+  push:
+
+jobs:
+  test:
+    runs-on: docker
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Test
+        run: echo "Forgejo runner works!"