[clang] [clang][analyzer] StreamChecker: Add more APIs, invalidate fscanf args (PR #82476)

[Alejandro Álvarez Ayllón via cfe-commits]

alejandro-alvarez-sonarsource wrote:

> How does this relate to the other PR #79470 (why comes this new patch when there is another for the same problem)? I think it is better to first commit #79470, then add remaining functions `getc`, `putc`, `vfscanf`, `vfprintf`. These should be added anyway in a separate change because it is less related to invalidation.

I started the work on this patch before #79470 was submitted, and didn't double-check if someone had tackled the same in the meantime. My bad. 

I agree on waiting for that one to land and strip this one down to the new set of functions.

https://github.com/llvm/llvm-project/pull/82476