[agents] Align V8 git-cl rules with shared Chromium skills
Remove V8's custom upload_cl.sh, edit_cl_description.sh, and
validate_cl_description.py scripts and align V8's git-cl and git-commit
rules with Chromium's shared git-cl-helper skill (72-char title limit,
git cl description -n +).
Retain V8's worktree isolation, mandatory regression test, stacked CL,
and WIP-by-default guardrails in git-cl.md.
TAG=agy
R=leszeks@chromium.org
Change-Id: Ieee756f06b183204c941f4d063ded32036048d88
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/8617944
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#110946}
Clemens Backes
50ac9be7af