Implement timeseries extraction based on user inputs

[henhuy]

A module for extraction of different timeseries shall be implemented.
The module must contain following functions:

• COP, depending on medium and type
• hotwater, depending on number of persons in household
• load, depending on SEK (Stromeffizienzklasse) and number of persons in household
• PV, depending on Höhenwinkel, Ausrichtungswinkel and type
• solarthermal, , depending on Höhenwinkel, Ausrichtungswinkel and type

As data is in minutes, output might be resampled into hourly values (optional) -> see pandas.resample

Timeseries data must be downloaded and copied into folder building_dialouge_webapp/heat/data/.
New module extraction.py (or similar) shoudl be placed within building_dialouge_webapp/heat/.
later on, this data will be transferred to oemof tabular datapackage (in another issue).

Timeseries & Description of OEPROM implementation:
https://wolke.rl-institut.de/apps/files/?dir=/393_building-dialogue/Projektinhalte/AP2_Modellsynthese/Umsetzung%20OeProm&fileid=812662