Update to WASDK 2.0 exp7 (#632)

Author: huichen123

Samples/WindowsAIFoundry/cs-winui/Directory.Packages.props

@@ -1,10 +1,10 @@
-<Project>
+<Project>
   <PropertyGroup>
     <ManagePackageVersionsCentrally>true</ManagePackageVersionsCentrally>
   </PropertyGroup>
 
   <ItemGroup>
     <!-- Core -->
-    <PackageVersion Include="Microsoft.WindowsAppSDK" Version="2.0.0-experimental3" />
+    <PackageVersion Include="Microsoft.WindowsAppSDK" Version="2.0.0-experimental7" />
   </ItemGroup>
 </Project>

Samples/WindowsAIFoundry/cs-winui/Examples/VideoScaler.md

@@ -11,4 +11,4 @@ var outputImageBuffer = ImageBuffer.CreateForBuffer(
             height,
             width * 3);
 
-var result = model.ScaleFrame(inputImageBuffer, outputImageBuffer, new VideoScalerOptions());
+var result = model.ScaleImageBuffer(inputImageBuffer, outputImageBuffer, null);

Samples/WindowsAIFoundry/cs-winui/Models/VideoScalerModel.cs

@@ -67,8 +67,8 @@ public SoftwareBitmap ScaleVideoFrame(SoftwareBitmap inputFrame)
             inputFrame.PixelWidth,
             inputFrame.PixelHeight,
             inputFrame.PixelWidth * 3);
-        var result = Session.ScaleFrame(inputImageBuffer, outputImageBuffer, new VideoScalerOptions());
-        if (result.Status != ScaleFrameStatus.Success)
+        var result = Session.ScaleImageBuffer(inputImageBuffer, outputImageBuffer, null);
+        if (result.Status != VideoScalerStatus.Success)
         {
             throw new Exception($"Failed to scale video frame: {result.Status}");
         }