Support more options available to google formatter

[scch-michael-pfeiffer]

Describe the bug The following options cannot be configured: --skip-removing-unused-imports --skip-reflowing-long-strings

Expected behavior

Provide two configuration options for the Maven plugin:

  <configuration>
     <skipRemovingUnusedImports>true</skipRemovingUnusedImports>
     <skipReflowingLongStrings>false</skipReflowingLongStrings>
   </configuration>