Design doc:
http://doc/1SAHn7d8M7CoazTd1laVF8gduFC_ikZWiYuytrR9c4Oc/

This CL implements basic API with integer and pointer types marshaling.

What is not supported yet:
- sequences
- annotations
- floating point arguments
- 64-bit arguments
- exception handling
- InstanceOf checks for the pointer types
- functions with non-void return type

Bug: chromium:1052746

Change-Id: Idbbf6dd50f43dfc9f8d707fe3333e5da3da84a13
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2030740
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Reviewed-by: Michael Stanton <mvstanton@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66322}