Add support to NuGet (.NET package manager)

[guibranco]

It would be nice if we had support for NuGet packages so we could navigate from the [some-project].csproj file to its NuGet page.

Example: CrispyWaffle.csproj

<ItemGroup>
    <PackageReference Include="Newtonsoft.Json" Version="13.0.2" />
    <PackageReference Include="System.Diagnostics.EventLog" Version="7.0.0" />
    <PackageReference Include="System.Security.Permissions" Version="7.0.0" />
</ItemGroup>

Each line above should point to NuGet page

Newtonsoft.Json System.Diagnostics.EventLog System.Security.Permissions