feat: add format check on ci

Author: QuentinTournier40

.github/workflows/maven.yml

@@ -18,5 +18,7 @@ jobs:
         java-version: "23"
         distribution: "temurin"
         cache: "maven"
+    - name: "Check formatting with Spotless"
+      run: "mvn spotless:check"
     - name: "Build with Maven"
       run: "mvn -B package --file pom.xml"