RFR: 8331569: G1: Rename G1HRPrinter to G1HeapRegionPrinter

[Thomas Schatzl]

Hi all,

  please review this rename of G1HRPrinter to G1HeapRegionPrinter to remove the abbreviation.

This change has been split into two commits:
1) rename the files, adapt includes
2) rename the class

I believe the changes are small so using two commits instead of two CRs/PRs is doable.

Based on #19062.

Testing: compliation, gha

Thanks,
  Thomas

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Depends on: https://git.openjdk.org/jdk/pull/19062

Commit messages:
 - rename class
 - 8331569

Changes: https://git.openjdk.org/jdk/pull/19063/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=19063&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8331569
  Stats: 112 lines in 10 files changed: 43 ins; 43 del; 26 mod
  Patch: https://git.openjdk.org/jdk/pull/19063.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/19063/head:pull/19063

PR: https://git.openjdk.org/jdk/pull/19063