[clang] [clang-format] Add Natural option for SortIncludes (PR #210788)

[Björn Schäpers via cfe-commits]

HazardyKnusperkeks wrote:

Yeah, you need commit access to merge.

And on merge everything will be squashed and rebased, no need (apart from solving conflicts) to do that manually.

https://github.com/llvm/llvm-project/pull/210788