Add SourceLink to Jellyfin.Data

Jellyfin.Data/Jellyfin.Data.csproj

@@ -28,6 +28,10 @@
     <CodeAnalysisRuleSet>../jellyfin.ruleset</CodeAnalysisRuleSet>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.0.0" PrivateAssets="All"/>
+  </ItemGroup>
+
   <!-- Code analysers-->
   <ItemGroup Condition=" '$(Configuration)' == 'Debug' ">
     <PackageReference Include="Microsoft.CodeAnalysis.FxCopAnalyzers" Version="2.9.8" PrivateAssets="All" />