This adds "annotated hexdump" as a disassembly output format, as a
first step only for individual functions:

$ out/x64.release/wami my_module.wasm --single-hexdump 17

"Annotated hexdump" format is useful for debugging/inspecting module
wire bytes, and for creating array literals for regression tests.

Change-Id: Iabfb4f9c6f68f3328910c1225a23b424e9315d4f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3748652
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Manos Koukoutos <manoskouk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81616}