[clang] [clang-format]: Add `StaticInlineOnly` and `StaticInline` options to `ShortFunctionStyle` (PR #133598)

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irymarchyk wrote:

@owenca, just to confirm - you are suggesting to add `Custom` string to `AllowShortFunctionsOnASingleLine` and new parameter (`AllowShortFunctionsOnASingleLineOptions` for example) which will control behavior if `AllowShortFunctionsOnASingleLine == Custom`? What options should be present? I think we can start with `Inline`, `Empty`, `static inline`, `constexpr` (?). 


https://github.com/llvm/llvm-project/pull/133598