Add Bun for CI

Author: Telesphoreo

.github/workflows/gradle.yml

@@ -14,5 +14,9 @@ jobs:
           distribution: temurin
           java-version: 25
           cache: gradle
+      - name: Set up Bun
+        uses: oven-sh/setup-bun@v2
+        with:
+          bun-version: latest
       - name: Build with Gradle
-        run: chmod a+x gradlew && ./gradlew build --no-daemon
+        run: chmod a+x gradlew && ./gradlew build --no-daemon