[clang-tools-extra] [clang-tidy] Add modernize-use-return-value check (PR #182081)

[via cfe-commits]

github-actions[bot] wrote:

<!--LLVM CODE LINT COMMENT: clang-tidy-->


:warning: C/C++ code linter, clang-tidy found issues in your code. :warning:

<details>
<summary>
You can test this locally with the following command:
</summary>

```bash

git diff -U0 origin/main...HEAD -- clang-tools-extra/clang-tidy/modernize/UseReturnValueCheck.cpp clang-tools-extra/clang-tidy/modernize/UseReturnValueCheck.h clang-tools-extra/clang-tidy/modernize/ModernizeTidyModule.cpp |
python3 clang-tools-extra/clang-tidy/tool/clang-tidy-diff.py   -path build -p1 -quiet
```

</details>

<details>
<summary>
View the output from clang-tidy here.
</summary>

```

clang-tools-extra/clang-tidy/modernize/UseReturnValueCheck.cpp:23:20: warning: function 'findSingleOutParam' is declared in an anonymous namespace; prefer using 'static' for restricting visibility [llvm-prefer-static-over-anonymous-namespace]
   23 | const ParmVarDecl *findSingleOutParam(const FunctionDecl *Func) {
      |                    ^
```

</details>


https://github.com/llvm/llvm-project/pull/182081