[clang-tools-extra] [clang-tidy] Make range source classes configurable (PR #226193)

[Baranov Victor via cfe-commits]

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@@ -59,6 +59,15 @@ Options
    Semicolon-separated list of names of vector-like classes. By default only
    ``::std::vector`` is considered.
 
+.. option:: ForRangeLoopClasses
+
+   Semicolon-separated list of names of container classes that can be used as
+   sources in range-based for loops. Each configured class must provide an
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vbvictor wrote:

```suggestion
   sources in range-based ``for`` loops. Each configured class must provide an
```

https://github.com/llvm/llvm-project/pull/226193