Introduce a new public API called CodeEventListener to allow embedders
to better support external profilers and other diagnostic tools without
relying on unsupported methods like --perf-basic-prof.

Bug: v8:7694
Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng
Change-Id: I063cc965394d59401358757634c9ea84c11517e9
Co-authored-by: Daniel Beckert <daniel@sthima.com.br>
Reviewed-on: https://chromium-review.googlesource.com/1028770
Commit-Queue: Yang Guo <yangguo@chromium.org>
Reviewed-by: Hannes Payer <hpayer@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53382}