Add funding rate watcher (#2)

* Add FundingRate interfaces and worker

* Add build on PR

* Remove zip

* Specify the solution path

* Add build for worker too

* Set up StatisticService.cs for funding rate

* Add Fundingrate alerts

* Send alert when big funding rate change + add SlashCommands.cs for fundingrate

* Remove fixtures

* Refact names

* Renames

src/Managing.Application.Abstractions/Services/ITradingService.cs

@@ -32,4 +32,5 @@ public interface ITradingService
     decimal GetFee(Account account, bool isForPaperTrading = false);
     Task WatchTrader();
     IEnumerable<Trader> GetTradersWatch();
+    void UpdateDeltaNeutralOpportunities();
 }