Remove EFCore.Analyzers.nuspec and configure MSBuild packaging

Co-authored-by: roji <1862641+roji@users.noreply.github.com>

Author: Copilot

src/EFCore.Analyzers/EFCore.Analyzers.csproj

@@ -6,12 +6,18 @@
     <AssemblyName>Microsoft.EntityFrameworkCore.Analyzers</AssemblyName>
     <RootNamespace>Microsoft.EntityFrameworkCore</RootNamespace>
     <IncludeBuildOutput>false</IncludeBuildOutput>
-    <NuspecFile>$(MSBuildProjectName).nuspec</NuspecFile>
+    <IncludeSymbols>true</IncludeSymbols>
     <CodeAnalysisRuleSet>$(MSBuildThisFileDirectory)..\..\rulesets\EFCore.noxmldocs.ruleset</CodeAnalysisRuleSet>
     <ImplicitUsings>true</ImplicitUsings>
     <EnforceExtendedAnalyzerRules>true</EnforceExtendedAnalyzerRules>
     <NoWarn>$(NoWarn);NU5128</NoWarn>
     <NoWarn>$(NoWarn);RS1038</NoWarn> <!-- Compiler extensions should be implemented in assemblies with compiler-provided references, #35752 -->
+
+    <!-- Analyzer settings -->
+<!--
+    <DevelopmentDependency>true</DevelopmentDependency>
+    <SuppressDependenciesWhenPacking>true</SuppressDependenciesWhenPacking>
+-->
   </PropertyGroup>
 
   <ItemGroup>
@@ -34,18 +40,12 @@
     <PackageReference Update="NETStandard.Library" PrivateAssets="all" />
   </ItemGroup>
 
-  <Target Name="SetPackageProperties" BeforeTargets="InitializeStandardNuspecProperties" DependsOnTargets="Build">
-    <PropertyGroup>
-      <!-- Make sure we create a symbols.nupkg. -->
-      <IncludeSymbols>true</IncludeSymbols>
-    </PropertyGroup>
-
-    <ItemGroup>
-      <NuspecProperty Include="targetFramework=$(TargetFramework)" />
-      <NuspecProperty Include="OutputBinary=$(OutputPath)$(AssemblyName).dll" />
-      <NuspecProperty Include="OutputSymbol=$(OutputPath)$(AssemblyName).pdb" />
-    </ItemGroup>
-  </Target>
+  <!-- Package the analyzer DLL and PDB in the analyzers/dotnet/cs directory -->
+  <ItemGroup>
+    <None Include="$(OutputPath)$(AssemblyName).dll" Pack="true" PackagePath="analyzers/dotnet/cs" />
+    <None Include="$(OutputPath)$(AssemblyName).pdb" Pack="true" PackagePath="analyzers/dotnet/cs" />
+    <None Include="PACKAGE.md" Pack="true" PackagePath="docs" />
+  </ItemGroup>
 
   <ItemGroup>
     <AdditionalFiles Include="AnalyzerReleases.Shipped.md" />