ZStdSharp.Port compression test code

Dockerfile.zstdtest

FROM mono:6.12

COPY zstdtest /zstdtest
CMD ["mono","/zstdtest/zstdtest.exe"]

zstdtest.cs

using System;
using System.IO;
using System.Linq;
using Microsoft.VisualBasic;
using ZstdSharp;
namespace zstdtest;

class Program
{
    static void Main(string[] args)
    {
        byte[] data = Enumerable.Range(0, 1024*1024).Select(i => (byte)(i & 0xff)).ToArray();
        var compressed = GetCompressed(data);
        Console.WriteLine($"compressed size={compressed.Count}, original size={data.Length}");
        Console.WriteLine(Convert.ToBase64String(compressed.Array, compressed.Offset, compressed.Count, Base64FormattingOptions.InsertLineBreaks));

    }
    static ArraySegment<byte> GetCompressed(byte[] data)
    {
        using var compressor = new Compressor(1);
        var compressed = new byte[Compressor.GetCompressBound(data.Length)];
        var byteswritten = compressor.Wrap(data, compressed, 0);
        return new ArraySegment<byte>(compressed, 0, byteswritten);
    }
}