RFR: 8370: HDR Histogram View

Tue Apr 1 23:13:16 UTC 2025

Adds a Histogram view that will work on any selected events (that have durations). Useful for looking at distributions of, for example, GC or Lock events, or for any events that have durations in the Event Browser. 

![image](https://github.com/user-attachments/assets/97e7d3a5-9be8-455f-bf1f-fc0e846ebb40)

Events in any percentile can be selected in the percentiles table and used to set the active selection in the selection store.
![image](https://github.com/user-attachments/assets/69fecbb6-6368-461b-af83-4605548e2513)

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Commit messages:
 - Cleanup
 - Copyrights
 - Selection fix
 - Fixing graph
 - 8370: First test

Changes: https://git.openjdk.org/jmc/pull/636/files
  Webrev: https://webrevs.openjdk.org/?repo=jmc&pr=636&range=00
  Issue: https://bugs.openjdk.org/browse/JMC-8370
  Stats: 464 lines in 12 files changed: 457 ins; 0 del; 7 mod
  Patch: https://git.openjdk.org/jmc/pull/636.diff
  Fetch: git fetch https://git.openjdk.org/jmc.git pull/636/head:pull/636

PR: https://git.openjdk.org/jmc/pull/636