[clang] [ssaf][UnsafeBufferUsage] Add JSON serialization for UnsafeBufferUsage (PR #187156)

[Balázs Benics via cfe-commits]

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@@ -0,0 +1,27 @@
+//===- UnsafeBufferUsageTest.h -----------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// Functions and data structures that help UnsafeBufferUsage unit tests
----------------
steakhal wrote:

```suggestion
// Functions and data structures that help UnsafeBufferUsage unit tests.
```

https://github.com/llvm/llvm-project/pull/187156