getBuyWithCryptoQuote
 Get a quote of type BuyWithCryptoQuote  to buy any given token with crypto.
This quote contains the information about the swap such as token amounts, processing fees, estimated time etc.
 Once you have the quote, you can use prepareTransaction  and prepare the transaction for submission.
 Object of type BuyWithCryptoQuote  which contains the information about the quote such as processing fees, estimated time, converted token amounts, etc.