Add build step to check formatting

Author: Garciat

.github/workflows/maven.yml

@@ -18,4 +18,4 @@ jobs:
         distribution: 'temurin'
         cache: maven
     - name: Build with Maven
-      run: mvn -B package --file pom.xml
+      run: mvn clean verify package

pom.xml

@@ -54,7 +54,32 @@
           <artifactId>maven-install-plugin</artifactId>
           <version>3.1.4</version>
         </plugin>
+        <plugin>
+          <groupId>com.spotify.fmt</groupId>
+          <artifactId>fmt-maven-plugin</artifactId>
+          <version>2.27</version>
+          <executions>
+            <execution>
+              <goals>
+                <goal>check</goal>
+              </goals>
+            </execution>
+          </executions>
+          <dependencies>
+            <dependency>
+              <groupId>com.google.googlejavaformat</groupId>
+              <artifactId>google-java-format</artifactId>
+              <version>1.27.0</version>
+            </dependency>
+          </dependencies>
+        </plugin>
       </plugins>
     </pluginManagement>
+    <plugins>
+      <plugin>
+        <groupId>com.spotify.fmt</groupId>
+        <artifactId>fmt-maven-plugin</artifactId>
+      </plugin>
+    </plugins>
   </build>
 </project>