This disables adding/removing line breaks by `clang-format`, as this
could very well introduce regressions in code formatting in terms of
our coding convention: If a long array was matching the soft limit of 80
chars per line, `clang-format` would reflow it to match the hard limit
of 100 chars.
One can selectively disable `clang-format` with magic comments. But at
this point, I'd say we should rather disable this feature until we
can configure it in a way to match our coding convention better (without
having to add magic comments).
This adds a clang-format configuration based on the Linux Kernel
configuration and modified to better match RIOT's coding convention.
Co-authored-by: mguetschow <mikolai.guetschow@tu-dresden.de>