add functions to call lib through python

[k0rventen]

Hi, I think it would be great to be able to call the lib directly from python code, so it would be possible to have a programmatic approach to importing devices.

I've added a few functions to start, for now we can import / interconnect devices using a configuration generated by a script that would call the netbox-netprod-importer lib, but the config of the lib (url of netbox etc) still needs to be a file loaded by netbox_netprod_importer.config.get_config(). I don't know what would be the best approach regarding this.

As an example, one could use the lib like so :

import netbox_netprod_importer

devices = {'SWITCH1': {'driver': 'ios', 'target': '192.168.1.1', 'discovery_protocol': 'cpd'}, 'SWITCH2': {'driver': 'ios', 'target': '192.168.1.2', 'discovery_protocol': 'cpd'}}

parsed_args = netbox_netprod_importer.init_importer(devices,"user","password")
netbox_netprod_importer.load_config(custom_path="config.yml")
netbox_netprod_importer.import_data(parsed_args)

It's clearly not ready to be merged, but maybe you would have ideas on how to implement this as you know better the lib than I do.

Thx,