[llvm] [llvm-cxxfilt] Add --quote option to quote demangled function names (PR #111871)

[Ronan Keryell via llvm-commits]

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@@ -20,6 +20,7 @@
 #include "llvm/TargetParser/Triple.h"
 #include <cstdlib>
 #include <iostream>
+#include <string>
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keryell wrote:

This is added automatically by `clangd` LSP server using the project configuration, so I guess it is cleaner according to the official coding style but I can remove it.

https://github.com/llvm/llvm-project/pull/111871