fix plugin

Author: xuzeyu91

Directory.Build.props

@@ -1,7 +1,7 @@
 <Project>
   <!-- See https://aka.ms/dotnet/msbuild/customize for more details on customizing your build -->
   <PropertyGroup>
-    <Version>0.1.20-dev3</Version>
+    <Version>0.1.20-dev4</Version>
     <SKVersion>1.17.1</SKVersion>  
   </PropertyGroup>
 </Project>

src/GraphRag.Net/GraphRag.Net.csproj

@@ -38,7 +38,9 @@
   </ItemGroup>
   <ItemGroup>
     <None Update="graphPlugins\**">
-      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+      <Pack>true</Pack>
+      <PackagePath>graphPlugins\</PackagePath>
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
     </None>
   </ItemGroup>
 </Project>