Adding PeerInfo textbox

We'll need to heavily refactor this HTML and CSS... way to many styles and complex structure

BTCPayServer/Models/InvoicingModels/PaymentModel.cs

@@ -49,5 +49,6 @@ namespace BTCPayServer.Models.InvoicingModels
         public string PaymentMethodId { get; internal set; }
 
         public bool AllowCoinConversion { get; set; }
+        public string PeerInfo { get; set; }
     }
 }