RFR: 8157023: Integrate NMT with JFR [v2]

[Stefan Johansson]

On Tue, 6 Dec 2022 15:12:54 GMT, Thomas Stuefe <stuefe at openjdk.org> wrote:

>> Looks good. Small simplification, instead of "_has_xxx" boolean flags, just use your MemSnapshotOptions as member.
>
>> Another thing @tstuefe, have you double checked my accounting around `mtChunk`? I tried to mimic what's done for the baseline and normal print-reports. Looks correct?
> 
> Forget my last comment about mtChunk. I think what you do is correct.

Thanks @tstuefe, will try to get a JFR reviewer on board as well and get this in before the fork.

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PR: https://git.openjdk.org/jdk/pull/11449