Sdk style csproj template that includes resources as well, plus compiles against Android Oreo, UWP Fall Creators Update and iOS 10

XamarinMultiTargetTemplate.csproj

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

  <PropertyGroup>
    <!--Work around so the conditions work below-->
    <TargetFrameworks></TargetFrameworks>
    <TargetFrameworks Condition=" '$(OS)' == 'Windows_NT' ">netstandard1.4;MonoAndroid81;Xamarin.iOS10;uap10.0.16299;</TargetFrameworks>
    <TargetFrameworks Condition=" '$(OS)' != 'Windows_NT' ">netstandard1.4;MonoAndroid81;Xamarin.iOS10;</TargetFrameworks>

    <AssemblyName>[Insert here]</AssemblyName>
    <RootNamespace>[Insert here]</RootNamespace>
    <PackageId>[Insert here]</PackageId>

    <Product>[Insert here]</Product>
    <AssemblyVersion>1.0.0.0</AssemblyVersion>
    <AssemblyFileVersion>1.0.0.0</AssemblyFileVersion>
    <Version>1.0.0.0</Version>
    <PackageVersion>1.0.0.0</PackageVersion>
    <PackOnBuild>true</PackOnBuild>
    <NeutralLanguage>en</NeutralLanguage>
    <LangVersion>default</LangVersion>
    <DefineConstants>$(DefineConstants);</DefineConstants>
    <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
    <GenerateDocumentationFile Condition=" '$(Configuration)' == 'Release' ">true</GenerateDocumentationFile>
    <UseFullSemVerForNuGet>false</UseFullSemVerForNuGet>
    <EnableDefaultCompileItems>false</EnableDefaultCompileItems>
    <PackageLicenseUrl>[Insert here]</PackageLicenseUrl>
    <PackageProjectUrl>[Insert here]</PackageProjectUrl>
    <RepositoryUrl>[Insert here]</RepositoryUrl>
    <PackageReleaseNotes>[Insert here]</PackageReleaseNotes>
    <PackageIconUrl>[Insert here]</PackageIconUrl>
    <PackageTags>xamarin, windows, ios, android, xamarin.forms</PackageTags>
    <Title>[Insert here]</Title>
    <Summary>Summary of nuget</Summary>
    <Description>[Insert here]</Description>
    <Owners>YOU</Owners>
    <Authors>YOU</Authors>
    <Copyright>Copyright 2018</Copyright>
  </PropertyGroup>  
  
  <ItemGroup>
    <!-- This None is here so the conditionally included files show up in the Solution Explorer -->
    <None Include="**\*.cs;**\*.xml;**\*.axml;**\*.png" Exclude="obj\**\*.*;bin\**\*.*;bin;obj" />
    
    <!-- global package references-->
    <PackageReference Include="Xamarin.Essentials" Version="0.6.0-preview" />
    <PackageReference Include="Xamarin.Forms" Version="3.0.0.446417" />
    <PackageReference Include="MSBuild.Sdk.Extras" Version="1.4.0" PrivateAssets="All" />
    
    <!-- UWP uses also xaml files, naming convention includes shared.* to enable different handling if necessary-->
    <None Remove="**\shared.*.xaml" />
    <Compile Update="**\shared.*.xaml.cs" DependentUpon="%(Filename)" />
    <EmbeddedResource Include="**\shared.*.xaml" SubType="Designer" Generator="MSBuild:UpdateDesignTimeXaml">
      <IncludeInPackage>true</IncludeInPackage>
    </EmbeddedResource>  
    
    <Compile Include="**\*.shared.cs" />
  </ItemGroup>

  <ItemGroup Condition=" $(TargetFramework.StartsWith('netstandard')) ">    
  </ItemGroup>
  
  
  <ItemGroup Condition=" $(TargetFramework.StartsWith('uap10.0')) ">      
    <PackageReference Include="Microsoft.NETCore.UniversalWindowsPlatform" Version="6.1.4" />
    
    <!-- Xamarin Forms uses also xaml files, naming convention includes uwp.* to enable different handling if necessary-->
    <None Remove="**\uwp.*.xaml" />
    <Compile Update="**\uwp.*.xaml.cs" DependentUpon="%(Filename)" />
    <EmbeddedResource Include="**\uwp.*.xaml" SubType="Designer" Generator="MSBuild:UpdateDesignTimeXaml">
      <IncludeInPackage>true</IncludeInPackage>
    </EmbeddedResource>  
      <Compile Include="**\*.uwp.cs" />    
  </ItemGroup>

  <ItemGroup Condition=" $(TargetFramework.StartsWith('MonoAndroid')) ">
    <!--need to reference all those libs to get Android V8.1... #sigh-->
    <PackageReference Include="Xamarin.Android.Support.Annotations" Version="27.0.2" />
    <PackageReference Include="Xamarin.Android.Support.Compat" Version="27.0.2" />
    <PackageReference Include="Xamarin.Android.Support.Core.Utils" Version="27.0.2" />
    <PackageReference Include="Xamarin.Android.Support.CustomTabs" Version="27.0.2" />
    <PackageReference Include="Xamarin.Android.Support.v4" Version="27.0.2" />
    <PackageReference Include="Xamarin.Android.Support.Design" Version="27.0.2" />
    <PackageReference Include="Xamarin.Android.Support.v7.AppCompat" Version="27.0.2" />
    <PackageReference Include="Xamarin.Android.Support.v7.CardView" Version="27.0.2" />
    <PackageReference Include="Xamarin.Android.Support.v7.Palette" Version="27.0.2" />
    <PackageReference Include="Xamarin.Android.Support.v7.MediaRouter" Version="27.0.2" />
    <PackageReference Include="Xamarin.Android.Support.Core.UI" Version="27.0.2" />
    <PackageReference Include="Xamarin.Android.Support.Fragment" Version="27.0.2" />
    <PackageReference Include="Xamarin.Android.Support.Media.Compat" Version="27.0.2" />
    <PackageReference Include="Xamarin.Android.Support.v7.RecyclerView" Version="27.0.2" />
    <PackageReference Include="Xamarin.Android.Support.Transition" Version="27.0.2" />
    <PackageReference Include="Xamarin.Android.Support.Vector.Drawable" Version="27.0.2" />

    <AndroidResource Include="Resources\**\android.*.axml">
      <IncludeInPackage>true</IncludeInPackage>
    </AndroidResource>
    <AndroidResource Include="Resources\**\android.*.xml">
      <IncludeInPackage>true</IncludeInPackage>
    </AndroidResource>
    <AndroidResource Include="Resources\**\android.*.png">
      <IncludeInPackage>true</IncludeInPackage>
    </AndroidResource>   
    <Compile Include="**\*.android.cs" />
  </ItemGroup>

  <ItemGroup Condition=" $(TargetFramework.StartsWith('Xamarin.iOS')) ">
    <Compile Include="**\*.ios.cs" />
    <BundleResource Include="Resources\**\ios.*.png">
      <IncludeInPackage>true</IncludeInPackage>
    </BundleResource>
    <None Update="Resources\**\ios.*.png">
      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
    </None>
  </ItemGroup>

  <Import Project="$(MSBuildSDKExtrasTargets)" Condition="Exists('$(MSBuildSDKExtrasTargets)')" />


</Project>