[llvm] Include LLVM_REPOSITORY and LLVM_REVISION in tool version (#84990)

Include the `LLVM_REPOSITORY` and `LLVM_REVISION` in the version output
of tools using `cl::PrintVersionMessage()` such as dwarfdump and
dsymutil.

Before:

```
$ llvm-dwarfdump --version
LLVM (http://llvm.org/):
  LLVM version 19.0.0git
  Optimized build with assertions.
```

After:

```
$ llvm-dwarfdump --version
LLVM (http://llvm.org/):
  LLVM version 19.0.0git (git@github.com:llvm/llvm-project.git 8467457a)
  Optimized build with assertions.
```

rdar://121526866