As a user, I want to be able to run my simulations using different backends without modifying my Python NeuroML simulation code

[sanjayankur31]

At the moment, I need to modify run_lems_with_jneuroml_neuron to something else in my Python scripts. Would it be possible to find a way of separating the choice of simulator from the script?

Possibilities:

• read an environment variable NEURONML_SIMULATOR and calls the appropriate method based on that
• read a configuration file for NeuroML which can include a number of fields, including the choice of simulator