SDV Community Day Lisbon 29-30 Mar

This event page should be based on: https://sdv.eclipse.org/sdv-contribution-day-sept-2022/

Initial Content: https://docs.google.com/document/d/1tjxSyiyVPU_Ggkdq-z-oK76YAqzJt2IsyBy6E5cFcik/edit?usp=sharing

• should be ready by mid of January -- @paulinagueorguieva

Planned launch of the website (all content): Feb 1st (the sooner we can get the basic page up, the better)