[llvm] Add CMake configure preset building blocks (PR #170019)

[Baranov Victor via llvm-commits]

vbvictor wrote:

To fix this, one needs to specify option `"cmake.useCMakePresets": "never"` in the VSCode `settings.json` file.

It was initially "auto" for me.

https://github.com/llvm/llvm-project/pull/170019