Add System.Diagnostics.DiagnosticSource,8.0.0

Author: MichaelSimons

eng/Build.props

@@ -22,6 +22,7 @@
       Format:
       <DependencyPackageProjects Include="$(RepoRoot)src\referencePackages\src\**\Microsoft.Extensions.Options.5.0.0.csproj" />
     -->
+    <DependencyPackageProjects Include="$(RepoRoot)src\referencePackages\src\**\System.Diagnostics.DiagnosticSource.8.0.0.csproj" />
   </ItemGroup>
 
   <ItemGroup Condition="'$(BuildDependencyPackageProjects)' == 'true'">

src/referencePackages/src/system.diagnostics.diagnosticsource/8.0.0/System.Diagnostics.DiagnosticSource.8.0.0.csproj

@@ -0,0 +1,18 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFrameworks>net6.0;net7.0;net8.0;netstandard2.0</TargetFrameworks>
+    <AssemblyName>System.Diagnostics.DiagnosticSource</AssemblyName>
+    <StrongNameKeyId>Open</StrongNameKeyId>
+  </PropertyGroup>
+
+  <ItemGroup Condition="'$(TargetFramework)' == 'net6.0'">
+    <PackageReference Include="System.Runtime.CompilerServices.Unsafe" Version="6.0.0" />
+  </ItemGroup>
+
+  <ItemGroup Condition="'$(TargetFramework)' == 'netstandard2.0'">
+    <PackageReference Include="System.Memory" Version="4.5.5" />
+    <PackageReference Include="System.Runtime.CompilerServices.Unsafe" Version="6.0.0" />
+  </ItemGroup>
+
+</Project>