ci: add github action s

.github/workflows/build.yml

@@ -0,0 +1,25 @@
+name: build
+on: [push, workflow_dispatch]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Use Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: "20.x"
+      - run: cd ./frontend/ && npm i && npm run build
+      - uses: actions/setup-java@v3
+        with:
+          java-version: '17'
+          distribution: 'temurin'
+      - name: Build with Gradle
+        uses: gradle/gradle-build-action@749f47bda3e44aa060e82d7b3ef7e40d953bd629
+        with:
+          arguments: build
+      - uses: actions/upload-artifact@v3
+        with:
+          name: Package
+          path: build/libs/*.jar