public static byte[] mergeByte(byte[] src, byte[] append) {
    byte[] dist = new byte[src.length + append.length];
    System.arraycopy(src, 0, dist, 0, src.length);
    System.arraycopy(append, 0, dist, src.length, append.length);
    return dist;
  }
Return a new byte array with another byte array to append to the end of byte array

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