Add OpenRewrite for automatic code cleanup

[vlsi]

Description

This enables automatic migrations and code cleanup

[vlsi]

It looks like OpenRewrite does not support mixed Java-Kotlin projects, so it can't parse Java files that call Kotlin classes:

jmeter/src/jorphan/src/main/java/org/apache/jorphan/gui/JFactory.java:111: error: cannot find symbol
    public static JEditableCheckBox small(JEditableCheckBox component) {
                  ^
  symbol:   class JEditableCheckBox
  location: class JFactory