In preperation for enabling limited inlining in Turboprop, add support
for lowering of Wasm JS calls that could be inlined as a result.

BUG=v8:9684

Change-Id: I744e190d6f14eeed7a9758cbd7f784f759785f4a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2979601Reviewed-by: Santiago Aboy Solanes <solanes@chromium.org>
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75324}