[clang] [clang-format] Option to ignore macro definitions (PR #70338)

[Owen Pan via cfe-commits]

================
@@ -24153,6 +24153,123 @@ TEST_F(FormatTest, WhitespaceSensitiveMacros) {
   verifyNoChange("FOO(String-ized&Messy+But: :Still=Intentional);", Style);
 }
 
+TEST_F(FormatTest, IgnorePPDefinitions) {
+  FormatStyle Style = getLLVMStyle();
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owenca wrote:

```suggestion
  auto Style = getLLVMStyle();
```

https://github.com/llvm/llvm-project/pull/70338