[llvm] [llvm] Revise IDE folder structure (PR #89741)

[Michael Kruse via llvm-commits]

Meinersbur wrote:

![image](https://github.com/llvm/llvm-project/assets/2278807/17d99da0-eae1-4faa-80b7-e6b69a267fc5)

Even though I have a 4K screen, it doesn't fit. This was created using image editing.

https://github.com/llvm/llvm-project/pull/89741