RFR: 8322332: Add API to access ZipEntry.extraAttributes

[xiaotaonan]

Add API to access ZipEntry.extraAttributes

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Commit messages:
 - Add API to access ZipEntry.extraAttributes

Changes: https://git.openjdk.org/jdk/pull/19202/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=19202&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8322332
  Stats: 16 lines in 1 file changed: 16 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/19202.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/19202/head:pull/19202

PR: https://git.openjdk.org/jdk/pull/19202