[clang] [clang-format] Handle common C++ non-keyword types as such (PR #83709)

[Owen Pan via cfe-commits]

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@@ -34,9 +34,15 @@ const char *getTokenTypeName(TokenType Type) {
   return nullptr;
 }
 
+// Sorted common C++ non-keyword types.
+static SmallVector<StringRef> CppNonKeywordTypes = {
+    "byte",   "int16_t",  "int32_t",  "int64_t",  "int8_t",
+    "size_t", "uint16_t", "uint32_t", "uint64_t", "uint8_t",
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owenca wrote:

I considered to include all [fixed width integer types](https://en.cppreference.com/w/cpp/types/integer) but decided to include only the common ones to avoid possible regressions. (I also looked at [fixed width floating-point types](https://en.cppreference.com/w/cpp/types/floating-point) and think we should wait until C++23 is commonly used.)

https://github.com/llvm/llvm-project/pull/83709