[MPMD-409] Support maven-pmd-extension

[jira-importer]

shalk opened MPMD-409 and commented

Maven have a ability Extensions. [https://maven.apache.org/guides/mini/guide-using-extensions.html]

 If pmd can support extension , may exist  procjets can be more easy to use pmd when continuous integration (CI)

 

ref : https://github.com/apache/maven-enforcer/tree/master/maven-enforcer-extension and https://maven.apache.org/enforcer/maven-enforcer-extension/usage.html

 

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