[vectorIntrinsics] RFR: 8264469: Add Insert float nodes implementation for Arm SVE

[Wang Huang]

Add Insert float nodes implementation for Arm SVE, like insertD & insertF

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Commit messages:
 - 8264469: Add Insert float nodes implementation for Arm SVE

Changes: https://git.openjdk.java.net/panama-vector/pull/56/files
 Webrev: https://webrevs.openjdk.java.net/?repo=panama-vector&pr=56&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8264469
  Stats: 66 lines in 2 files changed: 66 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/panama-vector/pull/56.diff
  Fetch: git fetch https://git.openjdk.java.net/panama-vector pull/56/head:pull/56

PR: https://git.openjdk.java.net/panama-vector/pull/56