Merge branch 'realtime_plotter' into 'dev'

mpikat/pipelines/gs_plotter.py

mpikat/utils/data_streams/__init__.py

mpikat/utils/data_streams/converter.py

mpikat/utils/data_streams/redis_sender.py

mpikat/utils/data_streams/redis_spectrum/__init__.py

mpikat/utils/data_streams/redis_spectrum/data_stream.py

mpikat/utils/testing/mock_redis_server.py

tests/__init__.py

tests/test_data_stream_converter.py

tests/test_pipeline_states.py

tests/test_redis_sender.py

tests/test_spead_capture.py