Adds a support function that dumps the current trace buffer using the
pw_log module.
Change-Id: Ie3b5bb666602ed0b0f294514e8c55646fba5c902
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/18160
Reviewed-by: Paul Mathieu <paulmathieu@google.com>
Reviewed-by: Keir Mierle <keir@google.com>
Commit-Queue: Prashanth Swaminathan <prashanthsw@google.com>
