Contacts.csproj

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <TargetFramework>netstandard2.0</TargetFramework>
    <ProduceReferenceAssembly>true</ProduceReferenceAssembly>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="Xamarin.Forms" Version="4.3.0.908675" />
    <PackageReference Include="Xamarin.Essentials" Version="1.3.1" />
    <PackageReference Include="sqlite-net-pcl" Version="1.6.292" />
  </ItemGroup>
  <ItemGroup>
    <Folder Include="Models\" />
    <Folder Include="ViewModels\" />
    <Folder Include="Views\" />
    <Folder Include="ViewModels\Commands\" />
  </ItemGroup>
</Project>