This CL adds support for handling calls to C functions with arbitrary
signatures on native arm64. It introduces a new ExternalReference type
FAST_C_CALL.

The CL also splits the 10 bits used by kArchCallCFunction instruction to
store the total number of parameters into two 5-bit values, representing
the number of general purpose and floating point parameters.

Design doc:
https://docs.google.com/document/d/1ZxOF3GSyNmtU0C0YJvrsydPJj35W_tTJZymeXwfDxoI/edit

This CL is partially based on the previous attempt:
https://chromium-review.googlesource.com/c/v8/v8/+/2343072

Bug: chromium:1052746
Change-Id: Ib508626d57da26ec3c9186ee8fc46356e3c87f3a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3182232Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77198}