[clang] [clang-format] Add AlignAfterOpenBracketOptions (PR #108332)

[Gedare Bloom via cfe-commits]

gedare wrote:


> > > I prefer that we limit this to breaking after the left parenthesis of a control statement, with true/false or Always, Never, Multiline, BlockIndent, etc.
> > 
> > 
> > if I understand you correctly, you would like a new style option added for setting break option for all control statements in the same way?
> 
> Yes.

This is basically re-written as requested. The Alignment is determined by the value of AlignAfterOpenBracket, except that because there is a forced break with `MultiLine` the alignment will happen at the Continuation Indent.  So using the new option with `MultiLine` and `AlignAfterOpenBracket.Align` is equivalent to using `AlignAfterOpenBracket.AlwaysBreak` with `MultiLine`.


https://github.com/llvm/llvm-project/pull/108332