RFR: 8260931: Implement JEP 382: New macOS Rendering Pipeline

[Ajit Ghaisas]

This is the implementation of JEP 382 : New macOS Rendering Pipeline (Metal rendering pipeline)

JEP Link - https://bugs.openjdk.java.net/browse/JDK-8238361

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Commit messages:
 - Project Lanai Patch

Changes: https://git.openjdk.java.net/jdk/pull/2403/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=2403&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8260931
  Stats: 17445 lines in 83 files changed: 17395 ins; 1 del; 49 mod
  Patch: https://git.openjdk.java.net/jdk/pull/2403.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/2403/head:pull/2403

PR: https://git.openjdk.java.net/jdk/pull/2403