Move tool detection to renovatebot/detect-tools

[rarkins]

Describe the proposed change(s).

We should move tool detection to a separate repo/module so that it can be shared outside Renovate, particularly with some Containerbase tooling we are building.

Start with Poetry and Pipenv.

Example from: https://github.com/renovatebot/renovate/blob/main/lib/modules/manager/pipenv/artifacts.ts

Instead of a getPythonConstraint() function where we pass content to the function, we should instead call our new external library and pass it a fully qualified path/directory.