[clang] [clang-format] Add options to set number of empty lines after includes (PR #78957)

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@@ -0,0 +1,159 @@
+//===--- IncludesSeparator.cpp ---------------------------*- C++ -*-===//
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mydeveloperday wrote:

> Does this have to be done in a separate pass? Couldn't it be done in the normal formatting?

+1 to that, we shouldn't really need a seperate pass 

https://github.com/llvm/llvm-project/pull/78957