Avoid code duplication, by creating helpers for setup and toolcall.
Also send indication of the path that will be used, when checking
for simpleproxy.py server to be running at runtime setup.
Initial go at implementing a web search tool call, which uses the
existing UrlText support of the bundled simpleproxy.py.
It allows user to control the search engine to use, by allowing
them to set the search engine url template.
The logic comes with search engine url template strings for
duckduckgo, brave, bing and google. With duckduckgo set by default.
hanishkvc