Have "--import" also read the "variables" section of an environment.yml file

[jacobwilliams]

Problem description

conda environment files can have a section that specifies environment vars that get set when the env is activated. Example:

variables:
  QT_API: pyside2

It would be nice if the pixi init --import command would also read these and add them to the pixi.toml. I think it would just be something like this:

[activation]
env = { QT_API="pyside2" }

[ruben-arts]

Good idea! PR's are welcome!