Features/stats export

[boltbeard]

The tasks from #256 was not completely finished, these are still in the works.

This PR includes the CSV + OEDB grid data exporting functions.

The CSV export seems to work quite well, the OEDB export requires some more work.

An exemplary script for exporting ding0 data to OEDB can be found here.

Tasks for both exporters

• Include weather_cell_id
• Add metadata export. For CSV export simply use the existing JSON-metadata export
• Correct the metadata that has to be exported with the two exporters.
• Do not aggregated generators while exporting data from Ding0 Export generators individually for CSV/OEDB export, not aggregated to one unit #265.
• Complete documentation about this features i.e. Update description table #269 (but more)
• Align structure and in particular column names between different exporters/importers Aligned column names for CSV, OEDB, description and metadata #268

Tasks only for OEDB export

• Make sure tables can be written to OEDB
• Make sure run_id is unique in OEDB (ask Ludwig for help on database stuff)
• Include export_network() in export_data_to_oedb()
• Add metadata to OEDB tables. This is a simple string which only holds the version of the software (Note, this is other metadata than above! -> Ask Ludwig for help/instructions) Add metadata to OEDB tables that store the ding0 grid data #270

Along with these the issues in #263 need to also be made

Tasks for versioning data in OEDB

• Use the current versioning setup through ego_grid_ding0_versioning for moving the data from model_draft to supply
• Fill the correct information for the metadata to be filled into the versioned tables in this spreadsheet
• Insert the metadata in the excel sheet into the versioned data, try to automate the generation of the metadata strings.
• Support the review process. Refer to issue #7 in OpenEnergyPlatform/data-preprocessing

[mltja]

Closed due to deprecation through breaking changes in ding0, mentioned in #384