client/core,app: Create arbitrage bot

The `makerBot` is refactored to take a `botEngine` as a field which contains the logic of when to place and cancel orders. The old maker bot logic is placed into the `gapEngine` type, and an arbitrage bot is added. The arbitrage bot compares the DEX and the CEX order books, and if there is an arbitrage opportunity, executes a trade on both. The UI is also updated to be able to create both gap and arbitrage bots.
decred · Dec 20, 2022 · af2d355 · af2d355
1 parent 903d6ce
commit af2d355
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diff --git a/client/cmd/mmbot/main.go b/client/cmd/mmbot/main.go
@@ -99,7 +99,7 @@ func mainErr() error {
 	}
 
 	if manualRate > 0 {
-		pgm.EmptyMarketRate = manualRate
+		pgm.GapEngineCfg.EmptyMarketRate = manualRate
 	}
 
 	net := dex.Mainnet