Added a hotkey for playing audio and video in the preview pane (#6690)

Author: TomaszSteblik

Files/UserControls/FilePreviews/MediaPreview.xaml

@@ -9,7 +9,9 @@
     d:DesignWidth="400"
     Unloaded="{x:Bind ViewModel.PreviewControlBase_Unloaded}"
     mc:Ignorable="d">
-
+    <UserControl.KeyboardAccelerators>
+        <KeyboardAccelerator Key="P" Modifiers="Control,Menu" Invoked="TogglePlaybackAcceleratorInvoked"/>
+    </UserControl.KeyboardAccelerators>
     <Grid CornerRadius="{StaticResource ControlCornerRadius}">
         <MediaPlayerElement
             x:Name="PlayerContext"

Files/UserControls/FilePreviews/MediaPreview.xaml.cs

@@ -1,9 +1,11 @@
-using Files.Services;
+using System;
+using Files.Services;
 using Files.ViewModels.Previews;
 using Microsoft.Toolkit.Mvvm.DependencyInjection;
 using Windows.Media.Playback;
 using Windows.UI.Xaml;
 using Windows.UI.Xaml.Controls;
+using Windows.UI.Xaml.Input;
 
 // The User Control item template is documented at https://go.microsoft.com/fwlink/?LinkId=234236
 
@@ -35,5 +37,17 @@ private void MediaPlayer_VolumeChanged(MediaPlayer sender, object args)
                 UserSettingsService.PreviewPaneSettingsService.PreviewPaneMediaVolume = sender.Volume;
             }
         }
+
+        private void TogglePlaybackAcceleratorInvoked(KeyboardAccelerator sender, KeyboardAcceleratorInvokedEventArgs args)
+        {
+            if (PlayerContext.MediaPlayer.PlaybackSession.PlaybackState is not MediaPlaybackState.Playing)
+            {
+                PlayerContext.MediaPlayer.Play();
+            }
+            else
+            {
+                PlayerContext.MediaPlayer.Pause();
+            }
+        }
     }
 }