Review request for JMC-6153: Making the JfrHtmlRulesReport work again

[Marcus Hirt]

Hi all,

Please review this fix to make the JfrHtmlRulesReport work again.

Jira:   https://bugs.openjdk.java.net/browse/JMC-6153

The fix is to move core\org.openjdk.jmc.flightrecorder.rules\src\main\java\org\openjdk\jmc\flightrecorder\rules\report\html\resultgroups.xml to core\org.openjdk.jmc.flightrecorder.rules\src\main\resources\org\openjdk\jmc\flightrecorder\rules\report\html\resultgroups.xml

Kind regards,
Marcus