[clang-tools-extra] [clang-tidy] Migrate explicit-constructor check from google to misc and add relative aliases (PR #194807)

[Zeyi Xu via cfe-commits]

================
@@ -199,12 +199,27 @@ New check aliases
   to :doc:`bugprone-assignment-in-selection-statement
   <clang-tidy/checks/bugprone/assignment-in-selection-statement>`.
 
+- Renamed :doc:`cppcoreguidelines-explicit-constructor <clang-tidy/checks/cppcoreguidelines/explicit-constructor>`
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zeyi2 wrote:

Would you please maintain 80 chars limit?

```
- Renamed :doc:`cppcoreguidelines-explicit-constructor
  <clang-tidy/checks/cppcoreguidelines/explicit-constructor>`
```

Same as below.

https://github.com/llvm/llvm-project/pull/194807