Added build workflow

Author: Lenni0451

.github/workflows/build.yml

@@ -0,0 +1,29 @@
+name: build
+on: [push, pull_request, workflow_dispatch]
+
+jobs:
+  build:
+    runs-on: ubuntu-24.04
+    if: ${{ github.event_name != 'pull_request' || github.repository != github.event.pull_request.head.repo.full_name }}
+    steps:
+      - name: Checkout Repository
+        uses: actions/checkout@v4
+        with:
+          persist-credentials: false
+      - name: Validate Gradle Wrapper
+        uses: gradle/actions/wrapper-validation@v4
+      - name: Set up JDK 21
+        uses: actions/setup-java@v4
+        with:
+          distribution: temurin
+          java-version: 21
+          check-latest: true
+      - name: Set Gradle Permissions
+        run: "chmod +x ./gradlew"
+      - name: Build with Gradle
+        run: "./gradlew build"
+      - name: Upload Artifacts to GitHub
+        uses: actions/upload-artifact@v4
+        with:
+          name: Artifacts
+          path: build/libs/