bisect-kit: Add isort tool for format check

BUG=b:247338352
TEST=./run_tests.sh

Change-Id: Ia8d5b2a9e79504e55ba55ae753a8826b52988263
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/bisect-kit/+/3990448
Commit-Queue: Ace Wu <acewu@chromium.org>
Reviewed-by: Zheng-Jie Chang <zjchang@chromium.org>
Tested-by: Ace Wu <acewu@chromium.org>
5 files changed