Clean up Avalonia.Native project.

src/Avalonia.Native/.gitignore

@@ -1 +0,0 @@
-Generated

src/Avalonia.Native/Avalonia.Native.csproj

@@ -1,12 +1,12 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
+    <IsPackable>false</IsPackable>
+    <IsPackable Condition="'$([MSBuild]::IsOSPlatform(OSX))' == 'True'">true</IsPackable>
     <TargetFramework>netstandard2.0</TargetFramework>
     <CastXmlPath Condition="Exists('/usr/bin/castxml')">/usr/bin/castxml</CastXmlPath>
     <CastXmlPath Condition="Exists('/usr/local/bin/castxml')">/usr/local/bin/castxml</CastXmlPath>
-    
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
-    <SharpGenGeneratedCodeFolder>$(MSBuildThisFileDirectory)/Generated</SharpGenGeneratedCodeFolder>
   </PropertyGroup>
     <ItemGroup>
         <PackageReference Include="SharpGenTools.Sdk" Version="1.1.2" PrivateAssets="all" />
@@ -27,5 +27,19 @@
         <Pack>true</Pack>
         <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
       </Content>
+  
+  <ItemGroup>
+    <SharpGenMapping Include="Mappings.xml" />
+    <PackageReference Include="SharpGenTools.Sdk" Version="1.1.2" PrivateAssets="all" />
+    <PackageReference Include="SharpGen.Runtime.COM" Version="1.1.0" />
+    <ProjectReference Include="..\..\packages\Avalonia\Avalonia.csproj" />
+  </ItemGroup>
+
+  <ItemGroup Condition="'$(Configuration)' == 'Release' AND '$(IsPackable)' == 'true'">
+    <Content Include="../../Build/Products/Release/libAvalonia.Native.OSX.dylib">
+      <PackagePath>runtimes/osx/native/libAvaloniaNative.dylib</PackagePath>
+      <Pack>true</Pack>
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </Content>
   </ItemGroup>
 </Project>

src/Avalonia.Native/Mappings.xml

@@ -12,10 +12,6 @@
              namespace="Avalonia.Native.Interop"
              attach="true"
              pre="#define COM_GUIDS_MATERIALIZE\n"/>
-    <bindings>
-        <bind from="HRESULT" to="SharpGen.Runtime.Result"/>
-        <bind from="HRESULT" to="SharpGen.Runtime.Result"/>
-    </bindings>
     <mapping>
         <remove function=".*" />
         <map interface="*.Events" callback="true" autogen-shadow="true"/>