[Settings/Run] LowLevel Keyboard hooking for Hotkeys (#3825)

* [Launcher/Settings] Low Level Keyboard Hooks

* [Run] LowLevel Keyboard Hook for Hotkeys

* Prevent shortcuts from auto repeating when keeping the keys pressed down

src/core/Microsoft.PowerToys.Settings.UI.Lib/HotkeySettingsControlHook.cs

@@ -0,0 +1,53 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using interop;
+
+namespace Microsoft.PowerToys.Settings.UI.Lib
+{
+    public delegate void KeyEvent(int key);
+    
+    public delegate bool IsActive();
+
+    public class HotkeySettingsControlHook
+    {
+        const int WM_KEYDOWN = 0x100;
+        const int WM_KEYUP = 0x101;
+        const int WM_SYSKEYDOWN = 0x0104;
+        const int WM_SYSKEYUP = 0x0105;
+
+        private KeyboardHook hook;
+        private KeyEvent keyDown;
+        private KeyEvent keyUp;
+        private IsActive isActive;
+
+        public HotkeySettingsControlHook(KeyEvent keyDown, KeyEvent keyUp, IsActive isActive)
+        {
+            this.keyDown = keyDown;
+            this.keyUp = keyUp;
+            this.isActive = isActive;
+            hook = new KeyboardHook(HotkeySettingsHookCallback, IsActive, null);
+            hook.Start();
+        }
+
+        private bool IsActive()
+        {
+            return isActive();
+        }
+
+        private void HotkeySettingsHookCallback(KeyboardEvent ev)
+        {
+            switch (ev.message)
+            {
+                case WM_KEYDOWN:
+                case WM_SYSKEYDOWN:
+                    keyDown(ev.key);
+                    break;
+                case WM_KEYUP:
+                case WM_SYSKEYUP:
+                    keyUp(ev.key);
+                    break;
+            }
+        }
+    }
+}