add requirements

[nicelulu]

[CLAassistant]

All committers have signed the CLA.

[paradiseHIT]

kafka or datahub are not necessary, so I don't think we need to add the requirements.

[nicelulu]

kafka or datahub are not necessary, so I don't think we need to add the requirements.

I found this output

[2024-11-14 20:31:52,789][WARNING] DataHub is not installed[Traceback (most recent call last):
  File "/usr/local/python3/lib/python3.8/site-packages/easy_rec-0.8.5-py3.8.egg/easy_rec/python/input/datahub_input.py", line 21, in <module>
    from datahub import DataHub
ModuleNotFoundError: No module named 'datahub'
]. You can install it by: pip install pydatahub
[2024-11-14 20:31:52,791][WARNING] kafka-python is not installed[Traceback (most recent call last):
  File "/usr/local/python3/lib/python3.8/site-packages/easy_rec-0.8.5-py3.8.egg/easy_rec/python/input/kafka_input.py", line 16, in <module>
    from kafka import KafkaConsumer, TopicPartition
ModuleNotFoundError: No module named 'kafka'
]. You can install it by: pip install kafka-python