Add support for LuaToken to the LuaCall unreal pipeline

Source/Integration/StringDecoder.h

@@ -37,6 +37,11 @@ public:
         write_string(std::string_view(utf8str.Get(), utf8str.Length()));
     }
 
+    void write_fname(const FName &name) {
+	    FTCHARToUTF8 utf8str(name.ToString());
+        write_string(std::string_view(utf8str.Get(), utf8str.Length()));
+    }
+
     void write_string(const char *s) {
         write_string(std::string_view(s));
     }
@@ -53,5 +58,15 @@ public:
         double z = read_double();
         return FVector(x, y, z);
     }
+
+    FString read_fstring() {
+        std::string_view s = read_string_view();
+	    return FString(s.size(), (const UTF8CHAR *)s.data());
+    }
+
+    FName read_fname() {
+        std::string_view s = read_string_view();
+        return FName(s.size(), (const UTF8CHAR *)s.data(), FNAME_Add);
+    }
 };