[clang] [clang-format] Change BinPackParameters to an enum to add a BreakAlways (PR #101882)

[via cfe-commits]

VolatileAcorn wrote:

> My bad! @mydeveloperday was right. So let's keep the name `BinPackParameters` and use the enumerated values `Always`, `OnePerLine`, and `Never`.
No problem, I've gone back to the previous changes but updated names of the values and rebased to fix the conflict with the startsNextParameter function


https://github.com/llvm/llvm-project/pull/101882