BIG TCP Overhaul and passcode start

- Switch to Serilog for console logging
- TCPSender is now persistent (let's hope) so can be used with passcode protected workspaces
- UDP connection works with passcodes just can't timeout
- Passcode prompt is automatic for workspaces that are password protected

iOS/AppDelegate.cs

@@ -1,9 +1,6 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-
-using Foundation;
+using Foundation;
 using UIKit;
+using Serilog;
 
 namespace qController.iOS
 {
@@ -14,6 +11,8 @@ namespace qController.iOS
         {
             global::Xamarin.Forms.Forms.Init();
 
+            Log.Logger = new LoggerConfiguration().WriteTo.NSLog().MinimumLevel.Debug().CreateLogger();
+
             LoadApplication(new App());
 
             return base.FinishedLaunching(app, options);