Add an autoformatter

Author: jacomago

pom.xml

@@ -229,6 +229,25 @@
                 <artifactId>maven-surefire-plugin</artifactId>
                 <version>3.1.2</version>
             </plugin>
+            <plugin>
+                <groupId>com.spotify.fmt</groupId>
+                <artifactId>fmt-maven-plugin</artifactId>
+                <version>2.23</version>
+                <configuration>
+                    <filesNamePattern>.*\.java</filesNamePattern>
+                    <skipSortingImports>false</skipSortingImports>
+                    <style>google</style>
+                </configuration>
+                <executions>
+                    <execution>
+                        <id>formatter</id>
+                        <goals>
+                            <goal>format</goal>
+                            <goal>check</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
             <!-- use self-contained integration tests - org.phoebus.channelfinder.docker -->
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>