Reland "webnn: implement reverse operator"

This is a reland of commit 0459ac1a9b94c1dd3e11410f7fb74f0a8e2ddeaf

The previous CL got reverted because another CL[1] changed the function
name `buildGraphAndCompute` to `buildAndExecuteGraph` in WPT. This CL
fixes the name.

[1] https://chromium-review.googlesource.com/c/chromium/src/+/5556220

Original change's description:
> webnn: implement reverse operator
>
> This CL adds IDL and mojo definition of reverse operator according to
> the spec issue [1] and implements it on DirectML backend.
>
> [1] https://github.com/webmachinelearning/webnn/issues/773
>
> Bug: 376707210
> Change-Id: I0d42b49b87ce243db9d44512e6000c7ee901077b
> Cq-Include-Trybots: luci.chromium.try:win11-blink-rel, mac14.arm64-blink-rel, mac15.arm64-blink-rel, linux-blink-rel
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5979825
> Commit-Queue: ningxin hu <ningxin.hu@intel.com>
> Auto-Submit: Shiyi Zou <shiyi.zou@intel.com>
> Reviewed-by: Austin Sullivan <asully@chromium.org>
> Reviewed-by: ningxin hu <ningxin.hu@intel.com>
> Cr-Commit-Position: refs/heads/main@{#1382078}

Bug: 376707210
Change-Id: I604de69bcc5f8932ac47f9f34a9b4c58e589193d
Cq-Include-Trybots: luci.chromium.try:mac14.arm64-blink-rel, mac14-blink-rel, mac15.arm64-blink-rel, mac15-blink-rel, linux-blink-rel
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6015938
Reviewed-by: ningxin hu <ningxin.hu@intel.com>
Commit-Queue: Shiyi Zou <shiyi.zou@intel.com>
Auto-Submit: Shiyi Zou <shiyi.zou@intel.com>
Reviewed-by: Weizhong Xia <weizhong@google.com>
Reviewed-by: Alex Gough <ajgo@chromium.org>
Reviewed-by: Austin Sullivan <asully@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1384152}