[clang] [clang][ssaf] Add EntityLinkage data structure and update TUSummary (PR #181718)

[Aviral Goel via cfe-commits]

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@@ -23,8 +24,11 @@ namespace clang::ssaf {
 class TUSummary {
   /// Identifies the translation unit.
   BuildNamespace TUNamespace;
+
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aviralg wrote:

Added this empty line for consistency wrt all the fields.

https://github.com/llvm/llvm-project/pull/181718