[clang] [clang-format] Add BinPackBinaryOperations configuration (PR #95013)

[Owen Pan via cfe-commits]

owenca wrote:

It seems [AlignOperands](https://clang.llvm.org/docs/ClangFormatStyleOptions.html#alignoperands) is supposed to do what this new option would, so maybe we should fix/extend `AlignOperands` instead?

https://github.com/llvm/llvm-project/pull/95013