RFR: 8342818: Implement CPU Time Profiling for JFR [v13]

[Johannes Bechberger]

> This is the code for the [JEP draft: CPU Time based profiling for JFR].

Johannes Bechberger has updated the pull request incrementally with two additional commits since the last revision:

 - Don't use method-sample-enabled control
 - Use ResetNoHandleMark when walking the stack

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Changes:
  - all: https://git.openjdk.org/jdk/pull/20752/files
  - new: https://git.openjdk.org/jdk/pull/20752/files/132779fb..7c61bc68

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=20752&range=12
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=20752&range=11-12

  Stats: 6 lines in 2 files changed: 3 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/20752.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/20752/head:pull/20752

PR: https://git.openjdk.org/jdk/pull/20752