[clang] [clang-format] Merge case alignment into AlignTokens (PR #187811)

[via cfe-commits]

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@@ -441,6 +442,10 @@ AlignTokenSequence(const FormatStyle &Style, unsigned Start, unsigned End,
   }
 }
 
+namespace {
+enum class AlignStrategy { Normal, Macros, CaseBody, CaseColon };
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owenca wrote:

```suggestion
enum class AlignStrategy { Normal, Macro, CaseBody, CaseColon };
```

https://github.com/llvm/llvm-project/pull/187811