#147 fix reference ExtShared

Author: maythamfahmi

Examples/DSAExample/DSAExample.cs

@@ -5,8 +5,6 @@
 
 using CryptoNet;
 using CryptoNet.ExtShared;
-using System.Runtime.InteropServices;
-
 
 var confidentialMessage = "Watson, can you hear me?";
 

Examples/DSAExample/DSAExample.csproj

@@ -9,10 +9,11 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="System.Text.Json" Version="8.0.5" />
+    <PackageReference Include="System.Text.Json" Version="9.0.8" />
   </ItemGroup>
 
   <ItemGroup>
     <ProjectReference Include="..\..\CryptoNet\CryptoNet.csproj" />
+    <ProjectReference Include="..\..\CryptoNet.ExtShared\CryptoNet.ExtShared.csproj" />
   </ItemGroup>
 </Project>