VSCode configurations: poetry env, disable julia language server, increase max-line-width

Thanks for this nice initiative! [Here](https://gist.github.com/blenzi/5fff71a220b77e2fe63874e191cdf938) is the script I wrote few months ago, hoping it is still valid. It allows to add poetry environnements to the list of python envs (to be run after the installations), disable julia language server, increase max-line-width and maybe others. Hope it is useful.