Use packages.lock file (#217)

* Use packages.lock file

* Specify versions

* Use correct version

* update csproj

Author: Charles-Gagnon

Directory.Build.props

@@ -4,5 +4,7 @@
     <EnableNETAnalyzers>true</EnableNETAnalyzers>
     <EnforceCodeStyleInBuild>true</EnforceCodeStyleInBuild>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
+    <RestorePackagesWithLockFile>true</RestorePackagesWithLockFile>
+    <RestoreLockedMode>true</RestoreLockedMode>
   </PropertyGroup>
 </Project>