RFR: 8157023: Integrate NMT with JFR [v2]

[Stefan Johansson]

On Mon, 5 Dec 2022 13:49:55 GMT, Thomas Stuefe <stuefe at openjdk.org> wrote:

>> Stefan Johansson has updated the pull request incrementally with two additional commits since the last revision:
>> 
>>  - Some refactoring after comments
>>  - egahlin and carterkozak comments
>
> 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?

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