Allow extracting arbitrary structure from message payload

[glopesdev]

This would be useful for complex data schemas and ultimately provide an infrastructure for vectorizing data and file transfer. Even in .NET framework this is possible to achieve, for example the below code is functional:

public static class Vectorized
{
    public static unsafe Msg<T>[] GetPayload<T>(byte[] messageBytes) where T : unmanaged
    {
        var output = new Msg<T>[messageBytes.Length / sizeof(Msg<T>)];
        fixed (void* ptr = output)
        {
            Marshal.Copy(messageBytes, 0, (IntPtr)ptr, messageBytes.Length);
        }
        return output;
    }
}

[StructLayout(LayoutKind.Sequential, Pack = 1)]
public struct Msg<T> where T : unmanaged
{
    public MessageType MessageType;
    public byte Length;
    public byte Address;
    public byte Port;
    public PayloadType PayloadType;
    public int Seconds;
    public short Microseconds;
    public T Payload;
    public byte Checksum;
}