Support https://www.tradovate.com/ broker

[m1dnightc0der]

Hi,

Was thinking of integrating with tradovate to access traditional and crypto futres on cme, their api is pretty much the same as a crypto exchange (https://api.tradovate.com/#section/Request-Reference/Subscribe-DOM) anyone have any concerns with integrating 3rd party brokers? @makarid @timmolter