Add Onion Version DuckDuckGo Lite as a default search engine in Tor

Add DuckDuckGo Lite as a default search engine in Tor. There is an onion version of DuckDuckGo in the list of default search engines though that does need to be changed to the version 3 address of https://duckduckgogg42xjoc72x3sjasowoarfbgcmvfimaftt6twagswzczad.onion/

This suggestion is about adding another entry to the list so it includes https://duckduckgogg42xjoc72x3sjasowoarfbgcmvfimaftt6twagswzczad.onion/lite This way, users don't have to manually add DuckDuckGo Lite onion address. This is especially useful on the Tor network since it is bandwidth limited.