RFR: JMC-7338: Add parser support for frame types generated by async-profiler

[Marcus Hirt]

On Fri, 9 Jul 2021 09:50:52 GMT, Jaroslav Bachorik <jbachorik at openjdk.org> wrote:

> Async Profiler (https://github.com/jvm-profiling-tools/async-profiler) is able to generate JFR recordings with CPU and allocation sample events spanning full-stack (from Java to OS/kernel).
> It is adding three new frame types for this reason:
> 
> - Native (C)
> - C++
> - Kernel
>  
> 
> Currently, the JMC parser will process all those frame types as 'UNKNOWN'. Although it is not breaking the rendering it would be nice to be able to get more info about the actual frame type.

Also, just a reminder that no reviewer should approve this PR until the master branch is updated to 8.2.0.

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PR: https://git.openjdk.java.net/jmc/pull/274