feat: add Tavily as optional search backend in WebSearchTool

feat: toolsearch use websearch

chore: rm log function of webfetch

feat: complete shouldDefer tool WebFetch

chore: clean WebSearchTool log test

fix: WebSearch return data.

test: WebSearchTool log

test: WebSearchTool log

feat: WebSearchTool

chore: clean

feat: jina websearch and webfetch

feat: config, jina fetch and search

fix: web saerch use python

feat: tls make web_search ok

fix: web search and fetch

feat: zero-search

fix: WebSearch API error

chore: WebFetchTool note

chore: webfetch ui note

init: verspercode v0.1.0