[llvm] Add llvm-dlltool to the toolchain list (PR #72563)

[Alexandre Ganea via llvm-commits]

aganea wrote:

> I don't mind this. @zmodem ?
> 
> I also think maybe we should have an optional package with the full suite of tools and libraries. We get a lot of questions about it.

...and PDBs, would be nice to resolve callstacks for error reporting and/or for profiling.

https://github.com/llvm/llvm-project/pull/72563