Add flag --trace-baseline-batch-compilation to enable tracing for
baseline batch compilation.

Bug: v8:11790
Change-Id: I2b05017181b95bf3bccb70e2092250211dafb86c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2945174Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Patrick Thier <pthier@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75014}