restore .clang-format

Cq-Include-Trybots: skia.primary:Housekeeper-PerCommit-CheckGeneratedFiles
Change-Id: I93f928c35b2369c9e496d4e887e8500970bea2ec
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/202359
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
50 files changed