feat: add Tavily as configurable search provider alongside SearXNG#16

tavily-integrations wants to merge 1 commit intoSPThole:mainSPThole/CoexistAI:mainfrom

Tavily-FDE:feat/tavily-migration/coexistai-searxng-to-tavilyTavily-FDE/autopr--fork-CoexistAI:feat/tavily-migration/coexistai-searxng-to-tavilyCopy head branch name to clipboard