Aggregate sequential trades and calculate total value

[badgerwithagun]

Is your feature request related to a problem? Please describe.
It is hard to see from the trade history what the P/L was from that pair of trades. Trades are often split into multiple fills and there is no indication of the counter currency total.

Describe the solution you'd like
Add a tab option to aggregate sequential trades with an average price, and add a total value column (again make this hideable)

Describe alternatives you've considered
Implement the concept of a "position" which is "opened" and "closed" with a P/L, but this is covered elsewhere as a future enhancement and is much wider in scope.

Additional context
None