Create CLI version of function using `fire`

[tommylees112]

Use google Fire for langchain_webcontent

original discussion here

Strongly recommend you look into Fire by Google https://github.com/google/python-fire

[tommylees112]

@dom-mcloughlin what did you mean w.r.t. using python fire for the langchain webcontent? that it should be a CLI tool? Why would that help in this instance?