RFR: 7338: Add parser support for frame types generated by async-profiler [v2]

[Jaroslav Bachorik]

> 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.

Jaroslav Bachorik has refreshed the contents of this pull request, and previous commits have been removed. The incremental views will show differences compared to the previous content of the PR. The pull request contains one new commit since the last revision:

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

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Changes:
  - all: https://git.openjdk.java.net/jmc/pull/274/files
  - new: https://git.openjdk.java.net/jmc/pull/274/files/cd04fb80..6b8a5f32

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jmc&pr=274&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jmc&pr=274&range=00-01

  Stats: 5 lines in 2 files changed: 0 ins; 2 del; 3 mod
  Patch: https://git.openjdk.java.net/jmc/pull/274.diff
  Fetch: git fetch https://git.openjdk.java.net/jmc pull/274/head:pull/274

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