Add hooks that enable NSSet, NSDictionary and NSString formatting to apply to other types beyond the well-known ones

This is meant to support languages that can do some sort of bridging from<-->to these ObjC types via types that statically vend themselves as Cocoa types, but dynamically have an implementation that does not match any of our well-known types, but where an introspecting formatter can be vended by the bridged language

llvm-svn: 249185
diff --git a/lldb/source/Plugins/Language/ObjC/ObjCLanguage.cpp b/lldb/source/Plugins/Language/ObjC/ObjCLanguage.cpp
index 6a67e37..2fd85c0 100644
--- a/lldb/source/Plugins/Language/ObjC/ObjCLanguage.cpp
+++ b/lldb/source/Plugins/Language/ObjC/ObjCLanguage.cpp
@@ -23,6 +23,9 @@
 #include "CF.h"
 #include "Cocoa.h"
 #include "CoreMedia.h"
+#include "NSDictionary.h"
+#include "NSSet.h"
+#include "NSString.h"
 
 using namespace lldb;
 using namespace lldb_private;