Treat local poetry envs similarly to local venvs

[pstorozenko]

Hi! For pyshiny apps my usual workflow is to use poetry for dependency management. In VS Code I get nicely suggestion if there's a poetry environment associated with the project (as recomended)

In Positron, the poetry created python kernel is mixed with other unrelated kernels.

I know you've suggested pyenv in wiki, but well, I think poetry becoming standard more than pyenv (we know it's a mess in python community 🤷🏻).

Wdyt?