Adding proposed NuGet icon (#270)

* Adding logo idea

* Adding proposed NuGet icon

Also included the Paint.net source file

Moq.AutoMock/Moq.AutoMock.csproj

@@ -24,6 +24,7 @@
     <SymbolPackageFormat>snupkg</SymbolPackageFormat>
 
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
+    <PackageIcon>NuGetIcon.png</PackageIcon>
     <NoWarn>$(NoWarn);AMG0002</NoWarn>
   </PropertyGroup>
 
@@ -42,6 +43,7 @@
   </ItemGroup>
 
   <ItemGroup>
+    <None Include="..\assets\NuGetIcon.png" Pack="true" PackagePath="\" />
     <None Include="..\LICENSE" Pack="true" PackagePath="" />
     <Compile Include="..\System.Diagnostics.CodeAnalysis.cs" />
     <None Include="..\Moq.AutoMocker.TestGenerator\bin\$(Configuration)\netstandard2.0\*.dll" Pack="True" PackagePath="analyzers\dotnet\cs" />

NuGet.config

@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+  <!-- `clear` ensures no additional sources are inherited from another config file. -->
+  <packageSources>
+    <clear />
+    <!-- `key` can be any identifier for your source. -->
+    <add key="nuget.org" value="https://api.nuget.org/v3/index.json" />
+  </packageSources>
+
+  <!-- Define mappings by adding package patterns beneath the target source. -->
+  <packageSourceMapping>
+    <!-- key value for <packageSource> should match key values from <packageSources> element -->
+    <packageSource key="nuget.org">
+      <package pattern="*" />
+    </packageSource>
+  </packageSourceMapping>
+</configuration>
+
+<!--
+As an example, you can define multiple package sources and map particular nuget packages from each source.
+This defines the package sources, nuget.org and contoso.com and maps all NuGet packages with Contoso.* to it.
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+  <packageSources>
+    <clear />
+    <add key="nuget.org" value="https://api.nuget.org/v3/index.json" />
+    <add key="contoso.com" value="https://contoso.com/packages/" />
+  </packageSources>
+  
+  <packageSourceMapping>
+    <packageSource key="nuget.org">
+      <package pattern="*" />
+    </packageSource>
+    <packageSource key="contoso.com">
+      <package pattern="Contoso.*" />
+    </packageSource>
+  </packageSourceMapping>
+</configuration>
+-->