Add command for linking .venv to Pixi environmets

[danielfleischer]

Hi all, as I'm getting into using pixi, a lot of toolings build upon the discovery of a local virtual environment at .venv. My suggestion is simple: link .venv to pixi environments. It can look like this

pixi workspace environment link [default]   # .venv -> .pixi/envs/default
pixi workspace environment link dev         # .venv -> .pixi/envs/dev

Comments:

1. There is support for pixi environments discovery for major editors but not all editors.
2. Detached environments could help but is not strictly a solution for local discovery.

[baszalmstra]

A python venv and a conda environment are not necessarily the same thing. So Im a bit hesitant to do this. Also why not just create the symlink yourself? Furthermore, symlinks are not supported on windows by default.

You might be interested in: #5929