Setup conda virtual env

see: https://github.com/zed-industries/zed/discussions/6564

pyrightconfig.json:

{
  "venv": "envname",
  "venvPath": "/home/user/miniforge3/envs"
}

or pyrightconfig.json:

{
  "executionEnvironments": [
    {
      "python": "<path_to_conda_env>/bin/python"
    }
  ]
}