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

[Owen Pan via cfe-commits]

================
@@ -1355,6 +1362,10 @@ unsigned UnwrappedLineFormatter::format(
     bool FixIndentation = (FixBadIndentation || ContinueFormatting) &&
                           Indent != TheLine.First->OriginalColumn;
     bool ShouldFormat = TheLine.Affected || FixIndentation;
+
+    if (Style.IgnorePPDefinitions && LineContainsPPDefinition(TheLine))
----------------
owenca wrote:

```suggestion
    if (Style.IgnorePPDefinitions && TheLine.startsWith(tok::hash, tok::pp_define))
```

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