Add suport for large object space allocations in Turbofan and use it
from CSA when young large objects are enabled. This maintains the
Turbofan invariant that the generation is statically predictable.

In principle, this enables write barrier elimination for large objects
allocated from Torque/CSA. But it doesn't seem to trigger much yet,
probably we have to improve the MemoryOptimizer.

Bug: v8:7793

Change-Id: I7ea7d0cb549573db65fafe5df5edf67e0ce90893
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1565905Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Tobias Tebbi <tebbi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60984}