enable sourcelink packaging for FCS, and embed PDBs

Author: baronfel

fcs/FSharp.Compiler.Service/FSharp.Compiler.Service.fsproj

@@ -34,6 +34,8 @@
     <PackageProjectUrl>https://github.com/fsharp/FSharp.Compiler.Service</PackageProjectUrl>
     <PackageIcon>logo.png</PackageIcon>
     <PackageTags>F#, fsharp, interactive, compiler, editor</PackageTags>
+    <PublishRepositoryUrl>true</PublishRepositoryUrl>
+    <EmbedUntrackedSources>true</EmbedUntrackedSources>
   </PropertyGroup>
   <PropertyGroup Condition="'$(TargetFramework)' == 'netstandard2.0'">
     <DefineConstants>$(DefineConstants);FX_NO_PDB_READER</DefineConstants>
@@ -727,6 +729,7 @@
     <PackageReference Include="System.Reflection.Metadata" Version="1.6.0" />
     <PackageReference Include="System.Buffers" Version="4.5.0" />
     <PackageReference Include="System.Memory" Version="4.5.3" />
+    <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.0.0" />
   </ItemGroup>
   <ItemGroup Condition="'$(TargetFramework)' == 'netstandard2.0'">
     <PackageReference Include="System.Reflection.Emit" Version="4.3.0" />