Challonge Provider can create tournament

LaDOSE.Src/LaDOSE.Service/Interface/IChallongeProvider.cs

@@ -0,0 +1,12 @@
+using System;
+using System.Threading.Tasks;
+
+namespace LaDOSE.Business.Interface
+{
+    public interface IChallongeProvider
+    {
+        Task<Boolean> GetLastTournament();
+        string GetLastTournamentMessage();
+        Task<Tuple<int, string>> CreateTournament(string name, string url);
+    }
+}