Feat/next stream update

@tim.schoof

in ASAPO 21.03 get_stream_list function return a list of dicts, which contains information about stream:

[{'lastId': 1, 'name': 'default', 'timestampCreated': 1617037228745609571, 'timestampLast': 1617037228745609571, 'finished': False, 'nextStream': ''}, {'lastId': 4, 'name': 'test001', 'timestampCreated': 1617037509990713974, 'timestampLast': 1617038135593899580, 'finished': True, 'nextStream': ''}, ...

Presented changes adopt function get_next_stream for the API changes of ASAPO.

CI tests are supplied.