RFR: JDK-8088418: Reintroducing the JFR Pulse Logger

[Marcus Hirt]

Hi all,

Please review this PR to reintroduce the JFR Pulse Logger.

Jira:   https://bugs.openjdk.java.net/browse/JDK-8088418
PR:     https://github.com/javafxports/openjdk-jfx/pull/272

Kind regards,
Marcus