Method to suggest sources from URLs and extract places info

[alexphiev]

Include an api and swagger route, for simply adding sources with urls and let the scrapper extract relevant information for nature.

Each extracted place and description should be checked in DB:

• if it exists, increase score and enhance description + store info in specific source data field + keep sources for reference and credits
• if it doesn't exist, add it to a new db table places_to_refine. we will have a specific script to take care of those later