[clang-tools-extra] [clang-tidy] Add more constexpr options to `readability-identifier-naming` (PR #162160)

[via cfe-commits]

================
@@ -389,6 +389,10 @@ Changes in existing checks
   <clang-tidy/checks/readability/uppercase-literal-suffix>` check to recognize
   literal suffixes added in C++23 and C23.
 
+- Improved :doc:`readability-identifier-naming
+  <clang-tidy/checks/readability/identifier-naming>` check by adding options
+  for fine-grained control over constexpr variables.
----------------
EugeneZelenko wrote:

```suggestion
  for fine-grained control over ``constexpr`` variables.
```

https://github.com/llvm/llvm-project/pull/162160