The Goldman Sachs to become the first large Wall Street firm to make markets in cryptocurrencies, whose wild price swings and surging values have captured the public’s imagination but given pause to established institutions. Already, the bank is among just a few mainstream firms clearing a new breed of bitcoin futures offered by Cboe Global Markets Inc. and CME Group Inc. Citigroup Inc. and Bank of America Corp., for example, have been taking a wait-and-see approach.