First this plumbs RuntimeCallStats from the OptimizingCompileDispatcher
down through to PipelineCompilationJob which stashes the
RuntimeCallStats on the PipelineData.

Adds new RCS thread-specific counters: OptimizeAssembleCode and
OptimizeBackgroundAssembleCode which are used in
PipelineImpl::AssembleCode.

Bug: v8:10006
Change-Id: Ieef6d32afddf4b0760e204010b09a85dfec92cf3
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1926030
Commit-Queue: Dan Elphick <delphick@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Cr-Commit-Position: refs/heads/master@{#65221}