feat: add logo and wire into NuGet packages

- Chevron-dot logo (SVG + 128x128 PNG)
- PackageIcon and PackageReadmeFile in Directory.Build.props
- RepositoryUrl added for NuGet linking
- Logo displayed in README header

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: MarcelRoozekrans

Directory.Build.props

@@ -13,9 +13,17 @@
     <Authors>Marcel Roozekrans</Authors>
     <Company>Marcel Roozekrans</Company>
     <PackageLicenseExpression>MIT</PackageLicenseExpression>
+    <PackageIcon>logo.png</PackageIcon>
+    <PackageReadmeFile>README.md</PackageReadmeFile>
+    <RepositoryUrl>https://github.com/MarcelRoozekrans/AdoNet.Async</RepositoryUrl>
     <RepositoryType>git</RepositoryType>
   </PropertyGroup>
 
+  <ItemGroup>
+    <None Include="$(MSBuildThisFileDirectory)assets/logo.png" Pack="true" PackagePath="" />
+    <None Include="$(MSBuildThisFileDirectory)README.md" Pack="true" PackagePath="" />
+  </ItemGroup>
+
   <ItemGroup>
     <PackageReference Include="Meziantou.Analyzer" Version="3.0.26">
       <PrivateAssets>all</PrivateAssets>

README.md

@@ -1,6 +1,10 @@
-# AdoNet.Async
+<p align="center">
+  <img src="assets/logo.svg" alt="AdoNet.Async" width="128" />
+</p>
 
-Async-first interfaces and base classes for ADO.NET. A drop-in replacement that brings modern `async/await`, `IAsyncEnumerable`, and `ValueTask` support to `System.Data`.
+<h1 align="center">AdoNet.Async</h1>
+
+<p align="center">Async-first interfaces and base classes for ADO.NET. A drop-in replacement that brings modern <code>async/await</code>, <code>IAsyncEnumerable</code>, and <code>ValueTask</code> support to <code>System.Data</code>.</p>
 
 [![NuGet](https://img.shields.io/nuget/v/AdoNet.Async.svg)](https://www.nuget.org/packages/AdoNet.Async)
 [![NuGet](https://img.shields.io/nuget/v/AdoNet.Async.DataSet.svg)](https://www.nuget.org/packages/AdoNet.Async.DataSet)