首次提交：添加src文件夹代码

packages/Microsoft.Xaml.Behaviors.Wpf.1.1.31/tools/Install.ps1

@@ -0,0 +1,5 @@
+param($installPath, $toolsPath, $package, $project)
+
+# Remove the reference to the .Design.dll, which is incorrectly referenced during
+# the NuGet package installation in .NET Framework applications (not .NET Core).
+$project.Object.References | Where-Object { $_.Name -eq 'Microsoft.Xaml.Behaviors.Design' } | ForEach-Object { $_.Remove() }