[clang] [clang-format] Add an option to format integer and float literal case (PR #151590)

[Andy MacGregor via cfe-commits]

30Wedge wrote:

> Most likely the docs were not generated with the script, but manually

Yup! I manually edited ClangFormatStyleOptions.rst in the first commit. Much easier to have a script do it for you :slightly_smiling_face: 

In the fixup, this file is regenerated with:  `python clang/docs/tools/dump_format_style.py`

https://github.com/llvm/llvm-project/pull/151590