feat(linux): add graphical platform services

src/AcDream.App/Rendering/FramePacingController.cs

@@ -25,9 +25,17 @@ internal sealed class FramePacingController : IDisposable
     private bool _disposed;
 
     public FramePacingController()
+        : this(PlatformFramePacingWaiterFactory.ForCurrentProcess())
+    {
+    }
+
+    internal FramePacingController(
+        IFramePacingWaiterFactory waiterFactory)
         : this(
             StopwatchFramePacingClock.Instance,
-            WindowsHighResolutionFramePacingWaiter.Create(),
+            (waiterFactory
+                ?? throw new ArgumentNullException(nameof(waiterFactory)))
+                .Create(),
             ownsWaiter: true)
     {
     }