[llvm] [VPlan] Add ExtractLane VPInst to extract across multiple parts. (PR #148817)

[Luke Lau via llvm-commits]

https://github.com/lukel97 approved this pull request.

LGTM. With only one vector this behaves like a ExtractElement VPInstruction right? Is it possible to replace ExtractElement with this later?

https://github.com/llvm/llvm-project/pull/148817