[lldb] [llvm] [lldb] Move SBLanguages.h out of API tree (PR #111929)

[Med Ismail Bennani via llvm-commits]

medismailben wrote:

> I'm just wondering, would this patch run into the same issue that I ran into on #111907 where this could cause a clean build to fail since the `SourceLangugageNames` file wouldn't be generated before it gets included in `lldb-enumerations.h`?

Possibly, we'll see when it lands 😛 

https://github.com/llvm/llvm-project/pull/111929