[GR-52942] Add JFR events and track peak usage for native memory tracking.

[roberttoyonaga]

This pull request adds JFR events for recently added native memory tracking.

It also adds tracking of peak malloc usage. Unfortunately, the stock NMT JFR events from the openJDK do not contain peak usage data. So the only way to view the peak usage data is by specifying -XX:+PrintNMTStatistics at runtime. Another possibility is to add Native Image specific NativeMemoryUsagePeak events.

See issue: #8452

[roberttoyonaga]

I've added 2 native image specific events to expose peak tracking information: svm.NativeMemoryUsageTotalPeak and svm.NativeMemoryUsagePeak. I think it's very useful to have access to the peak usage data through JFR. In OpenJDK the peak usage data can be accessed through jcmd, but this isn't available in native image.

[christianhaeubl]

Thanks for the PR, most parts look good. Before I integrate this PR, please squash all your commits (it seems that most commits are just fixup commits and don't have a dedicated purpose).

Please note that I plan to do a few cleanups and fixes on top before integration.

[roberttoyonaga]

Thanks @christianhaeubl ! I've updated the PR with the commits squashed.

[christianhaeubl]

Thanks!

[christianhaeubl]

We had some internal discussions regarding the Native Image-specific events. I marked the events as @Experimental (because NMT is experimental), changed the name-prefix to jdk. instead of svm., and changed the category to {"Java Virtual Machine", "Memory"}.

Please have a look at my PR and let me know if you think that any of those changes are an issue: #8668.