Can't find pyenv

[Huang-KJ]

I use pyenv to mange my python versions, the old version extension (deprecated one) can mange pyenv python versions while the new Python Environments extension can't detect python kernel from pyenv, and only shows global interpreters. I can't even add pyenv interpreters manually.

[karthiknadig]

See here for more info: #79

This is something that we expect to have support soon.