RFR: 7042: Bring back summary screen for Statistics on Object Allocation outside TLAB.

[Suchita Chaturvedi]

This PR addresses the enhancement of adding General screen (providing summary) and By Class (table and graph) for allocations inside and outside TLAB.

The changes include the enhancement "7043: Bring back summary screen for Statistics on Object Allocation inside TLAB" as well.

Note: This is bring back feature i.e. which was present in JMC 5.5 but was missing in recent releases.

Please review the change and provide your valuable comments.

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Commit messages:
 - 7042: Bring back summary screen for Statistics on Object Allocation outside TLAB.

Changes: https://git.openjdk.java.net/jmc/pull/269/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jmc&pr=269&range=00
  Issue: https://bugs.openjdk.java.net/browse/JMC-7042
  Stats: 134 lines in 8 files changed: 129 ins; 0 del; 5 mod
  Patch: https://git.openjdk.java.net/jmc/pull/269.diff
  Fetch: git fetch https://git.openjdk.java.net/jmc pull/269/head:pull/269

PR: https://git.openjdk.java.net/jmc/pull/269