New API for the algorithms

beat/backend/python/algorithm.py

beat/backend/python/data_loaders.py

beat/backend/python/inputs.py

beat/backend/python/test/mocks.py

.../test/prefix/algorithms/autonomous/valid_algorithm/1.json

...on/test/prefix/algorithms/autonomous/valid_algorithm/1.py

...n/test/prefix/algorithms/autonomous/valid_analysis/1.json

...hon/test/prefix/algorithms/autonomous/valid_analysis/1.py

...kend/python/test/prefix/algorithms/legacy/no_class/1.json

...ackend/python/test/prefix/algorithms/legacy/no_class/1.py

...test/prefix/algorithms/legacy/one_stream__no_delay/1.json

...n/test/prefix/algorithms/legacy/one_stream__no_delay/1.py

...st/prefix/algorithms/legacy/one_stream__with_delay/1.json

...test/prefix/algorithms/legacy/one_stream__with_delay/1.py

.../python/test/prefix/algorithms/legacy/parametrized/1.json

...nd/python/test/prefix/algorithms/legacy/parametrized/1.py

...d/python/test/prefix/algorithms/legacy/setup_crash/1.json

...end/python/test/prefix/algorithms/legacy/setup_crash/1.py

...nd/python/test/prefix/algorithms/legacy/setup_fail/1.json

...kend/python/test/prefix/algorithms/legacy/setup_fail/1.py