[clang] [llvm] [clang-format] Add cmake target clang-format-style-options for updating ClangFormatStyleOptions.rst (PR #111513)

[Nikita Popov via cfe-commits]

nikic wrote:

Reading back here, the general thing you are trying to do here is not allowed. At best you can add this as a manually invoked target that is not implicitly called by anything else. Though the actually correct way to handle this is what was proposed in https://github.com/llvm/llvm-project/pull/113739.

https://github.com/llvm/llvm-project/pull/111513