Search performance (Vue vs. Legacy) assets and data

Used for a presentation I gave at an offsite at the Wikimedia Foundation. I also converted this presentation to a blog article and put it on my site.

Also see datasheet I made at https://docs.google.com/spreadsheets/d/1cTvsAEoqbMdZiX7VSn_5Zn_4887806Xh6szYq16nJgs/edit?usp=sharing

https://docs.google.com/presentation/d/18cvrGC5jFoW-fT1LAz0pDAYoh2f09Vrmu2aVYa6VdOY/edit#slide=id.gcadb5c86bc_0_114