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

[Justin Stitt via cfe-commits]

https://github.com/JustinStitt approved this pull request.

Again, can't give any comprehensive code critiques but you addressed my nits and such so LGTM.

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