[llvm] [docs][CMake] Add CMakePreset, improve VS documentation (PR #84760)

[Aaron Ballman via llvm-commits]

AaronBallman wrote:

> Try with branch! It adds a important file in `.vs` that will allow you to open the root folder and load the CMake out of `llvm` subfolder.

I don't think I understand the suggestion -- how do I try with branch?

https://github.com/llvm/llvm-project/pull/84760