PowershellConsoleHost.cs

// add reference to project:
//  <Reference Include="Microsoft.PowerShell.ConsoleHost"/>
//  <Reference Include="System.Management.Automation"/>
class Program
{
    private static void Main(string[] args)
    {
        ConsoleShell.Start(RunspaceConfiguration.Create(),bannerText:"Powershell Host",helpText:string.Empty, args:args);
    }
}