feat: remove spectre.console

Replace `Spectre.Console.Cli` with `System.CommandLine`

src/process.dummy.app/Output.cs

@@ -3,32 +3,17 @@
 
 internal sealed class Output : IDisposable
 {
-	private readonly CancellationTokenSource _cts = new();
-
-	public Output()
-	{
-		Console.CancelKeyPress += Cancel;
-	}
-
 	public StreamReader Stdin { get; } = new(Console.OpenStandardInput(), leaveOpen: false);
 
 	public StreamWriter Stdout { get; } = new(Console.OpenStandardOutput(), leaveOpen: false);
 
 	public StreamWriter Stderr { get; } = new(Console.OpenStandardError(), leaveOpen: false);
 
-	public CancellationToken CancellationToken => _cts.Token;
-
 	public static Output Connect()
 	{
 		return new Output();
 	}
 
-	private void Cancel(object? sender, ConsoleCancelEventArgs args)
-	{
-		args.Cancel = true;
-		_cts.Cancel();
-	}
-
 	public void Dispose()
 	{
 		Stdout.BaseStream.Flush();
@@ -36,7 +21,5 @@ internal sealed class Output : IDisposable
 		Stderr.BaseStream.Flush();
 		Stderr.Dispose();
 		Stdin.Dispose();
-		Console.CancelKeyPress -= Cancel;
-		_cts.Dispose();
 	}
 }