[clang] [llvm] [NFC][analyzer] Introduce the BoundsChecking library (PR #213957)

[Balázs Benics via cfe-commits]

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+//===- BoundsChecking.h - Bounds checking related APIs ----------*- C++ -*-===//
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steakhal wrote:

Have you considered keeping this header inside the lib checkers directory?
I didn't think about it personally yet, but I wanted to raise this.
We have a few similar headers, such as AllocationState.h and similar. However, there are counterexamples, like Taint.h so I'm not sure where we draw the line. It's very likely that we are inconsistent.

https://github.com/llvm/llvm-project/pull/213957