RFR: 8359145: Implement Primitive Types in Patterns, instanceof, and switch (Fourth Preview)

[Aggelos Biboudis]

Draft PR for Primitive Types in Patterns, instanceof, and switch (Fourth Preview)

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Commit messages:
 - 8359145: Implement Primitive Types in Patterns, instanceof, and switch (Fourth Preview)

Changes: https://git.openjdk.org/jdk/pull/27637/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=27637&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8359145
  Stats: 788 lines in 17 files changed: 739 ins; 2 del; 47 mod
  Patch: https://git.openjdk.org/jdk/pull/27637.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/27637/head:pull/27637

PR: https://git.openjdk.org/jdk/pull/27637