nuget.config

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <packageSources>
    <!-- Default NuGet.org -->
    <add key="nuget.org" value="https://api.nuget.org/v3/index.json" />

    <!-- GitHub Packages -->
    <add key="github" value="https://nuget.pkg.github.com/YOUR_GITHUB_USERNAME/index.json" />
  </packageSources>

  <packageSourceCredentials>
    <github>
      <add key="Username" value="YOUR_GITHUB_USERNAME" />
      <add key="ClearTextPassword" value="YOUR_GITHUB_PAT" />
    </github>
  </packageSourceCredentials>
</configuration>