Enable Serilog and multithreading analyzer

Jellyfin.Drawing.Skia/Jellyfin.Drawing.Skia.csproj

@@ -25,9 +25,9 @@
   <!-- Code analysers-->
   <ItemGroup Condition=" '$(Configuration)' == 'Debug' ">
     <PackageReference Include="Microsoft.CodeAnalysis.FxCopAnalyzers" Version="2.9.7" PrivateAssets="All" />
-    <!-- <PackageReference Include="SerilogAnalyzer" Version="0.15.0" PrivateAssets="All" /> -->
+    <PackageReference Include="SerilogAnalyzer" Version="0.15.0" PrivateAssets="All" />
     <!-- <PackageReference Include="StyleCop.Analyzers" Version="1.1.118" PrivateAssets="All" /> -->
-    <!-- <PackageReference Include="SmartAnalyzers.MultithreadingAnalyzer" Version="1.1.31" PrivateAssets="All" /> -->
+    <PackageReference Include="SmartAnalyzers.MultithreadingAnalyzer" Version="1.1.31" PrivateAssets="All" />
   </ItemGroup>
 
   <PropertyGroup Condition=" '$(Configuration)' == 'Debug' ">