staticanalysis/bot: clang-format reformats code that is correctly formatted

[abpostelnicu]

The first thing that the bot does is to performa a ./mach clang-format[1], that translates to running clang-format on a diff[2].
In most cases this is fine but there are some scenarios where context is needed by clang-format to better determine the token types that need to be reformat and thus errors happen, please see [3] and [4].
Since we already formatted the entire repo I think it's safe to assume that we want to do a per file basis format where we call:
./mach clang-format -p file
for all of the eligible files from the patch.