Handle multiple depots per vehicle

[PaulScheerRLI]

This PR Changes the following:

• renames c_garage to c_invest and c_garage_annual to c_annual
• calculate costs only for gcs. Vehicle with rotations starting at non electrified stations get added to the column "Non_elctrified_station"
• All stations from electrified_stations are shown in summary_vehicles_cost. If they are not used, e.g. a stop in a rotation, their column is filled with "0"
• the column cumulated uses vehicle counts and costs for the whole scenario. In cases of vehicles with multiple depots the vehicle amounts of cumulated can be lower than the sum of the other columns (double counting)
• invest costs and invest_costs_annualy are not the sum of each column. Since vehicles may be double counted and invest costs contain vehicle costs, the cumulated invest_costs and invest_costs_annualy are calculated separately with vehicle costs which contain all vehicle once
• Costs are now listed as a row for each station and a column for each cost parameter