Update catalogue documentation for 3rd prototype release

[DajanaSnopkova]

Deadline 18. 3.

Published version: https://main.soilwise-documentation.pages.dev/technical_components/catalogue/

Source markdowns: https://github.com/soilwise-he/SoilWise-documentation/blob/main/tech/docs/technical_components/catalogue.md

• use structure similar to Soil Companion component
• add Solr
• describe new React frontend functionality, technology
• keep pycsw for publication of APIs
• migrate repo from WUR gitlab to SoilWise github