[gold] Add tool for initializing SQL tables
[gold] Add tool for initializing SQL tables

Bug: skia:10582
Change-Id: Ib7d1e06426c6cdc1ec2a3566e0201b5f15dfb0bf
Reviewed-on: https://skia-review.googlesource.com/c/buildbot/+/352417
Reviewed-by: Leandro Lovisolo <f558143c2568be8d55575d13f30a1fc5cb8009d5@google.com>

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