#5761 [feat] cross exchange mining

The pull request adds a new strategy named cross exchange mining, the strategy is similar to cross exchange market making but instead of taker trades being acted upon from a maker side fill event, the strategy instead constantly monitors balances of the base asset across the two exchanges and upon finding a reduction or addition of the base asset above or below the set base amount (caused by a sell or buy event on the maker exchange), will attempt to balance by increasing or decreasing the asset through a market order on the most profitable exchange. This balancing process is checked each tick meaning the user will not be left with base asset unhedged in case of a single market order failure.

This results in a much more stable and reliable strategy as the XEMM strategy can often become unbalanced over time due to unforseen issues or events that cause the taker side market order to fail. This is the key reason that users would lose money on this strategy due to a loss of quote and base balance across exchanges.