Add Custom Indication Example that Accepts a TradeBar

[AlexCatarino]

Expected Behavior

We have an example of a Custom TradeBar indicator.

Actual Behavior

We only have an example for DataPoint.

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

[AlexCatarino]

Closed by 08a4ac8