Dependency injection rewrite

TabletBot.Common/IAsyncInitialize.cs

@@ -0,0 +1,9 @@
+using System.Threading.Tasks;
+
+namespace TabletBot.Common
+{
+    public interface IAsyncInitialize
+    {
+        Task InitializeAsync();
+    }
+}

TabletBot.Common/Settings.cs

@@ -22,6 +22,7 @@ public sealed class Settings
         public string GitHubToken { set; get; } = null;
         public string CommandPrefix { set; get; } = "!";
         public uint GitHubIssueRefLimit { set; get; } = 3;
+        public uint SpamThreshold { set; get; } = 3;
 
         public LogLevel LogLevel { set; get; } = LogLevel.Debug;