extract deflection integrator from JimenezWakeDeflection and GCLHillDeflection...

py_wake/deflection_models/deflection_model.py

py_wake/deflection_models/gcl_hill_vortex.py

py_wake/deflection_models/jimenez.py

...ke/tests/test_deflection_models/test_deflection_models.py

py_wake/tests/test_flow_map.py

...e/tests/test_input_modifier_models/test_input_modifier.py

py_wake/tests/test_windturbines/test_power_ct_curves.py

py_wake/utils/model_utils.py

py_wake/wind_turbines/power_ct_functions.py