The fuzzer runs the same wire bytes through the streaming decoder and
through synchronous compilation, and compares the result. In particular,
if one fails, then also the other should fail.

More checks for the result of both pipelines can be added later.

R=ahaas@chromium.org

Bug: v8:12922
Change-Id: I905adf740e581c4b7d0f4ab7c0d5d0e48d96fc4c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3675100Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80842}