Lengths between turbines in manual mode

[badeshiben]

@parangat94 @akey7 @eberlea
In manual mode, turbine locations are specified. This affects collection cable length, road length, and crane travel distance. CostModule.py should be updated to find these lengths, so that the modules can be called independently.

[badeshiben]

@akey7 @parangat94 Taken care of in issue 130.

[parangat94]

Apologies for not taking a look at this so far @badeshiben. Will catch up with you later this week to discuss this. I'll set something up on your calendar.