To enable this, the following changes were necessary:
- Fix generation of accessors with MaybeObject type
  and a bunch of include problems.
- Torque-generated C++ classes now have a constructor that can allow
  Smi values to enable a hack currently used for the DescriptorArray.


Bug: v8:7793 v8:8983
Change-Id: If6e35db99199a0e2afd2698af3d84777d6d0b18f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2108036
Commit-Queue: Tobias Tebbi <tebbi@chromium.org>
Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67247}