Pull PSI_Interface from NuGet, rather than keeping a copy in the repo…

… lib folder.

Also updates PSI_Interface, fixing the bug of not outputting mgf/ms2 index numbers in the output

MzidToTsvConverter/MzidToTsvConverter.csproj

@@ -40,9 +40,6 @@
     <Reference Include="PNNLOmics">
       <HintPath>..\lib\PNNLOmics.dll</HintPath>
     </Reference>
-    <Reference Include="PSI_Interface">
-      <HintPath>..\lib\PSI_Interface.dll</HintPath>
-    </Reference>
     <Reference Include="System" />
     <Reference Include="System.Core" />
     <Reference Include="System.Xml.Linq" />
@@ -60,6 +57,11 @@
   <ItemGroup>
     <None Include="App.config" />
   </ItemGroup>
+  <ItemGroup>
+    <PackageReference Include="PSI_Interface">
+      <Version>1.2.0</Version>
+    </PackageReference>
+  </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.