clean up AddCommand EditCommand

Apollon.WPF/Commands/OpenEditTournamentCommand.cs

@@ -0,0 +1,26 @@
+using Apollon.WPF.Stores;
+using Apollon.WPF.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Apollon.WPF.Commands
+{
+    public class OpenEditTournamentCommand : CommandBase
+    {
+        private readonly ModalNavigationStore _modalNavigationStore;
+
+        public OpenEditTournamentCommand(ModalNavigationStore modalNavigationStore)
+        {
+            _modalNavigationStore = modalNavigationStore;
+        }
+
+        public override void Execute(object parameter)
+        {
+            EditTournamentViewModel editTournamentViewModel = new EditTournamentViewModel(_modalNavigationStore);
+            _modalNavigationStore.CurrentViewModel = editTournamentViewModel;
+        }
+    }
+}