RFR: 8338894: Deprecate jhsdb debugd for removal

[Kevin Walls]

Deprecation annotations and warnings on starting the tool(s).
Handle man page in a separate issue.

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Commit messages:
 - Update html docs
 - 8338894: Deprecate jhsdb debugd for removal

Changes: https://git.openjdk.org/jdk/pull/20830/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=20830&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8338894
  Stats: 21 lines in 5 files changed: 19 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/20830.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/20830/head:pull/20830

PR: https://git.openjdk.org/jdk/pull/20830