Add Source Link info to binaries

Author: AArnott

src/CodeGeneration.Roslyn.Plugin.Sdk/CodeGeneration.Roslyn.Plugin.Sdk.csproj

@@ -5,6 +5,8 @@
     <Description>The MSBuild SDK that helps correctly create CodeGeneration.Roslyn plugins.</Description>
     <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
     <DevelopmentDependency>true</DevelopmentDependency>
+    <SymbolPackageFormat></SymbolPackageFormat>
+    <IncludeSymbols>false</IncludeSymbols>
     <!--
     Min Version is 2.5 because that's when build/ folder support was introduced:
     https://docs.microsoft.com/en-us/nuget/release-notes/nuget-2.5#automatic-import-of-msbuild-targets-and-props-files
@@ -23,7 +25,7 @@
   <ItemGroup>
     <None Include="**/*.props;**/*.targets" Pack="true" PackagePath="" />
   </ItemGroup>
-  
+
   <!--
     This target adds a Sdk/Version.props file to the nuget package.
     That props file contains CodeGenerationRoslynPluginSdkVersion property,

src/Directory.Build.props

@@ -9,6 +9,11 @@
     <RepositoryUrl>https://github.com/aarnott/CodeGeneration.Roslyn</RepositoryUrl>
     <RepositoryType>git</RepositoryType>
     <PackageReleaseNotes>https://github.com/AArnott/CodeGeneration.Roslyn/blob/master/CHANGELOG.md</PackageReleaseNotes>
+
+    <PublishRepositoryUrl>true</PublishRepositoryUrl>
+    <EmbedUntrackedSources>true</EmbedUntrackedSources>
+    <IncludeSymbols>true</IncludeSymbols>
+    <SymbolPackageFormat>snupkg</SymbolPackageFormat>
   </PropertyGroup>
 
   <PropertyGroup>
@@ -39,6 +44,7 @@
     <PackageReference Include="Nerdbank.GitVersioning" Version="3.0.28" PrivateAssets="all" />
     <PackageReference Include="StyleCop.Analyzers" Version="1.1.118" IncludeAssets="analyzers" PrivateAssets="all" />
     <PackageReference Include="Microsoft.NETFramework.ReferenceAssemblies" Version="1.0.0" PrivateAssets="all"/>
+    <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.0.0" PrivateAssets="All" />
   </ItemGroup>
 
   <ItemGroup>