makeNetstringReader = (input, opts) => {
  return harden(makeNetstringIterator(input, opts));
}
@param {Iterable<Uint8Array> | AsyncIterable<Uint8Array>} input
@param {object} [opts]
@param {string} [opts.name]
@param {number} [opts.maxMessageLength]
@returns {import('@endo/stream').Reader<Uint8Array, undefined>} input