RFR: 8376187: [VectorAPI] Define new lane type constants and pass them to intrinsic entries [v4]

[Jatin Bhateja]

> As per [discussions ](https://github.com/openjdk/jdk/pull/28002#issuecomment-3789507594) on JDK-8370691 pull request, splitting out portion of PR#28002 into a separate patch in preparation of Float16 vector API support.
> 
> Patch add new lane type constants and pass them to vector intrinsic entry points.
> 
> All existing Vector API jtreg test are passing with the patch.
> 
> Kindly review and share your feedback.
> 
> Best Regards,
> Jatin

Jatin Bhateja has updated the pull request incrementally with one additional commit since the last revision:

  Review comments resolutions

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Changes:
  - all: https://git.openjdk.org/jdk/pull/29481/files
  - new: https://git.openjdk.org/jdk/pull/29481/files/d81035fd..ff73dc3d

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=29481&range=03
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=29481&range=02-03

  Stats: 858 lines in 48 files changed: 290 ins; 13 del; 555 mod
  Patch: https://git.openjdk.org/jdk/pull/29481.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/29481/head:pull/29481

PR: https://git.openjdk.org/jdk/pull/29481