[llvm] [mlgo-utils] Hoist entrypoint scripts to mlgo-utils directory (PR #146981)

[Vincent Lee via llvm-commits]

thevinster wrote:

> Please leave the files in their original locations and create the symlinks in the root directory.

Unfortunately, that won't work because it'll end up resolving to the real path of the file which is in `mlgo/corpus/*`. I tried that first only to realize that it wouldn't work. 

https://github.com/llvm/llvm-project/pull/146981