feat: Enable net Analyzer

.editorconfig

@@ -134,6 +134,9 @@ csharp_space_between_parentheses = false
 csharp_space_between_square_brackets = false
 space_within_single_line_array_initializer_braces = true
 
+#Net Analyzer
+dotnet_analyzer_diagnostic.category-Performance.severity = none #error - Uncomment when all violations are fixed.
+
 # Wrapping preferences
 csharp_wrap_before_ternary_opsigns = false
 

Avalonia.sln

@@ -90,6 +90,7 @@ EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Props", "Props", "{F3AC8BC1-27F5-4255-9AFC-04ABFD11683A}"
 	ProjectSection(SolutionItems) = preProject
 		build\ApiDiff.props = build\ApiDiff.props
+		build\AvaloniaPublicKey.props = build\AvaloniaPublicKey.props
 		build\Base.props = build\Base.props
 		build\Binding.props = build\Binding.props
 		build\CoreLibraries.props = build\CoreLibraries.props
@@ -102,8 +103,10 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Props", "Props", "{F3AC8BC1
 		build\Microsoft.CSharp.props = build\Microsoft.CSharp.props
 		build\Microsoft.Reactive.Testing.props = build\Microsoft.Reactive.Testing.props
 		build\Moq.props = build\Moq.props
+		build\NetAnalyzers.props = build\NetAnalyzers.props
 		build\NetCore.props = build\NetCore.props
 		build\NetFX.props = build\NetFX.props
+		build\NullableEnable.props = build\NullableEnable.props
 		build\ReactiveUI.props = build\ReactiveUI.props
 		build\ReferenceCoreLibraries.props = build\ReferenceCoreLibraries.props
 		build\Rx.props = build\Rx.props

build/NetAnalyzers.props

@@ -0,0 +1,5 @@
+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <EnableNETAnalyzers>true</EnableNETAnalyzers>
+  </PropertyGroup>
+</Project>

src/Directory.Build.props

@@ -2,6 +2,7 @@
   <Import Project="..\Directory.Build.props" />
   <Import Project="..\build\SharedVersion.props" />
   <Import Project="..\build\SourceLink.props" Condition="'$(DisableSourceLink)' == ''" />
+  <Import Project="..\build\NetAnalyzers.props"/>
   <ItemGroup>
     <Compile Include="$(MSBuildThisFileDirectory)\Shared\ModuleInitializer.cs" >
        <Link>Shared\_ModuleInitializer.cs</Link>