Adds support for Kerberos/NTLM authentication

[Badgerati]

Description of the Change

• Adds the Kerberos.NET NuGet package
• Adds support for Kerberos/NTLM authentication

Related Issue

Resolves #402

Examples

Start-PodeServer -Threads 2 {
    Add-PodeEndpoint -Address localhost -Port 8080 -Host 'pode.example.com' -Protocol Http
    New-PodeLoggingMethod -Terminal | Enable-PodeErrorLogging

    New-PodeAuthScheme -Negotiate -KeytabPath 'C:\temp\pode-user.keytab' | Add-PodeAuth -Name 'Login' -Sessionless -ScriptBlock {
        param($identity)
        $identity | out-default
        return @{ User = $identity }
    }

    Add-PodeRoute -Method Get -Path '/' -Authentication Login -ScriptBlock {
        Write-PodeJsonResponse -Value @{ result = 'hello' }
    }
}