RFR: 8293850: need a largest_committed metric for each category of NMT's output

[Afshin Zafari]

The `peak` amount of allocation is kept for Virtual Memory allocations.
Whenever `reserved` and `committed` amounts are printed, the `largest_committed` also is printed.

tiers 1-7 passed.

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Commit messages:
 - 8293850: need a largest_committed  metric for each category of NMT's output

Changes: https://git.openjdk.org/jdk/pull/15305/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=15305&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8293850
  Stats: 42 lines in 4 files changed: 29 ins; 0 del; 13 mod
  Patch: https://git.openjdk.org/jdk/pull/15305.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/15305/head:pull/15305

PR: https://git.openjdk.org/jdk/pull/15305