q_capacityMargin: Add an option for coefficient for consumption units
q_capacityMargin has following section:
// Conversion unit inputs might require additional capacity
+ sum(gnu_input(grid, node, unit),
+ v_gen(grid, node, unit, s, f, t)
) // END sum(gnu_input)
Batteries and other storage chargers are automatically calculated in here. There should be an option to include availabilityCapacityMargin also for gnu_input parts of this constraint.