This debug::WasmValue is a wrapper around internal::WasmValue. It is exposed
to the inspector, and contains helper methods to get the type and underlying
bytes of the Wasm value. This will later be used by the inspector, in
value-mirror, to expose the WasmValue to DevTools via CDP.

Bug: v8:10347
Change-Id: I1ee20c0be3a20dad2cfe3994a166e9a284af5d4f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2137864Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67160}