initial load

YouTubeViewers.WPF/Commands/CloseModalCommand.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using YouTubeViewers.WPF.Stores;
+
+namespace YouTubeViewers.WPF.Commands
+{
+    public class CloseModalCommand : CommandBase
+    {
+        private readonly ModalNavigationStore _modalNavigationStore;
+
+        public CloseModalCommand(ModalNavigationStore modalNavigationStore)
+        {
+            _modalNavigationStore = modalNavigationStore;
+        }
+
+        public override void Execute(object? parameter)
+        {
+            _modalNavigationStore.Close();
+        }
+    }
+}