feat: SerializeAs Support IValueConverter

[zh3305]

using

   [FieldOrder(0)]
    [SerializeAs(SerializedType.TerminatedString, StringTerminator = (char)0x20, ConverterType = typeof(HexStringToIntConvert))]
    public int DataAmount { get; set; }

Refs: #199

[zh3305]

This is a simple implementation. But I think there should be a better way to implement it,