Changes:
- Add optional WasmModuleObject field to WasmGlobalObject
- Introduce DynamicTypeCheckRef. Use it to typecheck imported global
  objects.
- Correctly typecheck imported WasmGlobalObjects.
- Add some testing infrastructure and one test file

Bug: v8:7748
Change-Id: Icc62d378d17696c5808d580f1ec84186c9556ec1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2403248Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69872}