Adds Crypto Support to Interactive Brokers

[AlexCatarino]

Expected Behavior

Be able to trade crypto in an IB account.

Actual Behavior

Not supported.

Potential Solution

Implement crypto support to IB: https://interactivebrokers.github.io/tws-api/cryptocurrency.html

Reproducing the Problem

Deploy crypto algorithm to IB.

Checklist

• [x] I have completely filled out this template
• [x] I have confirmed that this issue exists on the current master branch
• [x] I have confirmed that this is not a duplicate issue by searching issues