Prevent Display Sleep on Windows while running a game (#1850)

Co-authored-by: EliEron <example@example.com>

Ryujinx.Common/System/DisplaySleep.cs

@@ -0,0 +1,35 @@
+using System;
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.Common.System
+{
+    public class DisplaySleep
+    {
+        [Flags]
+        enum EXECUTION_STATE : uint
+        {
+            ES_CONTINUOUS = 0x80000000,
+            ES_DISPLAY_REQUIRED = 0x00000002,
+            ES_SYSTEM_REQUIRED = 0x00000001
+        }
+
+        [DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
+        static extern EXECUTION_STATE SetThreadExecutionState(EXECUTION_STATE esFlags);
+
+        static public void Prevent()
+        {
+            if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
+            {
+                SetThreadExecutionState(EXECUTION_STATE.ES_CONTINUOUS | EXECUTION_STATE.ES_SYSTEM_REQUIRED | EXECUTION_STATE.ES_DISPLAY_REQUIRED);
+            }
+        }
+        
+        static public void Restore()
+        {
+            if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
+            {
+                SetThreadExecutionState(EXECUTION_STATE.ES_CONTINUOUS);  
+            }
+        }
+    }
+}

Ryujinx/Ui/MainWindow.cs

@@ -554,6 +554,8 @@ namespace Ryujinx.Ui
                 _windowsMultimediaTimerResolution = new WindowsMultimediaTimerResolution(1);
             }
 
+            DisplaySleep.Prevent();
+
             GlRendererWidget = new GlRenderer(_emulationContext, ConfigurationState.Instance.Logger.GraphicsDebugLevel);
 
             Application.Invoke(delegate
@@ -604,6 +606,7 @@ namespace Ryujinx.Ui
 
                 _windowsMultimediaTimerResolution?.Dispose();
                 _windowsMultimediaTimerResolution = null;
+                DisplaySleep.Restore();
 
                 _viewBox.Remove(GlRendererWidget);
                 _viewBox.Add(_gameTableWindow);

Ryujinx/Ui/Windows/SettingsWindow.glade

@@ -1299,6 +1299,7 @@
                                       <object class="GtkLabel">
                                         <property name="visible">True</property>
                                         <property name="can-focus">False</property>
+                                        <property name="tooltip-text" translatable="yes">Change System Time</property>
                                         <property name="halign">end</property>
                                         <property name="label" translatable="yes">System Time:</property>
                                       </object>
@@ -1509,7 +1510,7 @@
                                   <object class="GtkLabel">
                                     <property name="visible">True</property>
                                     <property name="can-focus">False</property>
-                                    <property name="tooltip-text" translatable="yes">Change System Region</property>
+                                    <property name="tooltip-text" translatable="yes">Change Audio Backend</property>
                                     <property name="halign">end</property>
                                     <property name="margin-right">5</property>
                                     <property name="label" translatable="yes">Audio Backend: </property>