public static byte[] mergeByte(byte[] src, byte append) {
    return mergeByte(src, new byte[] {append});
  }
Return a new byte array with one byte to append to the end of byte array

@param src byte array appended to
@param append one byte to append
@return new byte array with appended byte
amoro-format-iceberg/src/main/java/org/apache/amoro/log/Bytes.java