Add new mvn alias for `mvn fmt:format` (#9053)

* mvn: add mvnfmt alias

* mvn: update README.md

plugins/mvn/README.md

@@ -36,6 +36,7 @@ if it's found, or the mvn command otherwise.
 | `mvndocs`            | `mvn dependency:resolve -Dclassifier=javadoc`   |
 | `mvndt`              | `mvn dependency:tree`                           |
 | `mvne`               | `mvn eclipse:eclipse`                           |
+| `mvnfmt`             | `mvn fmt:format`                                |
 | `mvnjetty`           | `mvn jetty:run`                                 |
 | `mvnp`               | `mvn package`                                   |
 | `mvns`               | `mvn site`                                      |

plugins/mvn/mvn.plugin.zsh

@@ -59,6 +59,7 @@ alias mvnd='mvn deploy'
 alias mvndocs='mvn dependency:resolve -Dclassifier=javadoc'
 alias mvndt='mvn dependency:tree'
 alias mvne='mvn eclipse:eclipse'
+alias mvnfmt='mvn fmt:format'
 alias mvnjetty='mvn jetty:run'
 alias mvnp='mvn package'
 alias mvns='mvn site'