[clang-tools-extra] [clang-tidy] Add check 'bugprone-unsafe-to-allow-exceptions' (PR #176430)

[Donát Nagy via cfe-commits]

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+.. title:: clang-tidy - bugprone-unsafe-to-allow-exceptions
+
+bugprone-unsafe-to-allow-exceptions
+===================================
+
+Finds functions where throwing exceptions is unsafe but the function is still
+marked as throwable. Throwing exceptions from the following functions can be
----------------
NagyDonat wrote:

```suggestion
marked as potentially throwing. Throwing exceptions from the following functions can be
```
As above, "throwable" would mean an exception-like object that can be thrown, not a function that can potentially throw exceptions. 

Please re-wrap the paragraph after applying this suggestion. 

https://github.com/llvm/llvm-project/pull/176430