Copy app.config to output directory

Author: ethanhann

src/InEngine/InEngine.csproj

@@ -56,6 +56,9 @@
     <None Update="docker-compose.yml">
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
     </None>
+    <None Update="app.config">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
   </ItemGroup>
 </Project>