add settings screen

get playlist from settings, in first run - open Settings

TV Player WPF/Settings.xaml.cs

@@ -0,0 +1,15 @@
+using System.Windows.Controls;
+
+namespace TV_Player
+{
+    /// <summary>
+    /// Interaction logic for ProgramsGroupGrid.xaml
+    /// </summary>
+    public partial class Settings : UserControl
+    {
+        public Settings()
+        {
+            InitializeComponent();
+        }
+    }
+}