[clang-tools-extra] [clang-tidy] Add llvm-type-switch-case-types check (PR #177892)

[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/llvm/TypeSwitchCaseTypesCheck.cpp clang-tools-extra/clang-tidy/llvm/TypeSwitchCaseTypesCheck.h clang-tools-extra/clang-tidy/llvm/LLVMTidyModule.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/llvm/TypeSwitchCaseTypesCheck.cpp:48:3: warning: variable 'CaseType' of type 'QualType' can be declared 'const' [misc-const-correctness]
   48 |   QualType CaseType = TemplateArg.getArgument().getAsType();
      |   ^
      |            const 
clang-tools-extra/clang-tidy/llvm/TypeSwitchCaseTypesCheck.cpp:56:3: warning: variable 'ParamType' of type 'QualType' can be declared 'const' [misc-const-correctness]
   56 |   QualType ParamType = LambdaParam->getType();
      |   ^
      |            const
```

</details>


https://github.com/llvm/llvm-project/pull/177892