cook up a workflow

.forgejo/workflows/build.yaml

@@ -0,0 +1,17 @@
+on: [push]
+jobs:
+  build:
+    runs-on: node-16
+    steps:
+      - uses: https://github.com/actions/checkout@v4
+      - name: Set up JDK 11
+        uses: https://github.com/actions/setup-java@v4
+        with:
+          java-version: '17'
+          distribution: 'temurin'
+          cache: maven
+      - name: Build with Maven
+        run: mvn package
+      - uses: https://github.com/actions/upload-artifact@v4
+        with:
+          path: target/animalrp-1.0.0-animalrp.jar