Summary:
This diff runs CLANGFORMAT lint on FlipperKitTestUtils. I have added CLANGFORMAT as the lint engined for objc files in xplat/sonar. Right now the iOS folder is not formatted according to CLANGFORMAT.
Ran `arc lint -a --paths-cmd "find ./iOS/FlipperKitTestUtils -type f" --verbose`
Reviewed By: passy
Differential Revision: D19942175
fbshipit-source-id: a5067100e604aad438fef1842157217a8cd1734c
a19a430eee