[include-cleaner] Print the line number of removal #includes.

I found that this information is helpful when using this tool.

Reviewed By: kadircet

Differential Revision: https://reviews.llvm.org/D139715

clang-tools-extra/include-cleaner/tool/IncludeCleaner.cpp

@@ -130,7 +130,7 @@ class Action : public clang::ASTFrontendAction {
       switch (Print) {
       case PrintStyle::Changes:
         for (const Include *I : Results.Unused)
-          llvm::outs() << "- " << I->quote() << "\n";
+          llvm::outs() << "- " << I->quote() << " @Line:" << I->Line << "\n";
         for (const auto &I : Results.Missing)
           llvm::outs() << "+ " << I << "\n";
         break;