[Feat] Implement Methods for automatic data upload to wikidata

[moritzzingg-netlight]

Subtask of #631

Description

To be able to automatically update wikidata with our carbon footprint data we need methods to create or update the data on wikidata utilizing wikidata's REST API.

Tasks

• Understand wikidatas datamodel and REST-API
• Implement method to search for existing data for a specific timeframe, scope and category
• Implement method to update existing data and adding the source reference
• Implement method to create new data point for non existing data
• Combine all methods into one routine
• Test implemented routine in the sandbox