[clang] [clang-tools-extra] [clang-tidy][dataflow] Add `bugprone-null-check-after-dereference` check (PR #84166)

[via cfe-commits]

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@@ -0,0 +1,163 @@
+.. title:: clang-tidy - bugprone-null-check-after-dereference
+
+bugprone-null-check-after-dereference
+=====================================
+
+.. note::
+
+   This check uses a flow-sensitive static analysis to produce its
+   results. Therefore, it may be more resource intensive (RAM, CPU) than the
+   average Clang-tidy check.
----------------
EugeneZelenko wrote:

```suggestion
   average Clang-Tidy check.
```

https://github.com/llvm/llvm-project/pull/84166