- Add support for packed types.
- Emit arguments first in wasm-module-builder.cc.

Bug: v8:7748
Change-Id: I358ca13db4332e026ee5850de6f629822bc92b04
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2948887Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75061}