Add support for off-thread SharedFunctionInfo allocation, which
includes UncompiledData and PreparseData allocation.

Bug: chromium:1011762
Change-Id: Ia10f9ce762c7d7eb1108b9e71da75131dce919b7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2050393
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66246}