Add gg to .gitignore (#13152)

* Add gg.cmd

* Fix location

* Update .gitignore

* Ignore gg.cmd

* Remove gg.cmd

Author: koppor

.gitignore

@@ -16,6 +16,10 @@ jablib/src/main/resources/csl-locales
 
 javafx/
 
+# genreated by gg.cmd
+m2
+gg.cmd
+
 # generated by https://plugins.jetbrains.com/plugin/15991-plantuml-diagram-generator
 *.puml