Maintains a type-safe key/value local map where the values are USTRUCT() struct or a supported basic types (int8, uint8, int16, uint16, int32, uint32, int64, uint64, float, double, bool, FName, FText, FString). This class is meant to be used as a local/private client store where the IConcertClientDataStore interface is meant to be used in a client(s)/server scenario.