Add Volta Support

[adamavenir]

This PR adds integration for volta

If:

• volta is installed
• package.json is present

Then:

• the script will parse the required Node.js version from the engines field
• configure the environment to use the specified version
• make the version available to the prompt in node-info

[indrajitr]

Almost every *nix out there has vi as editor command. Also chances are many users just type vi without thinking and expect the editor to show up on the screen.

[adamavenir]

lol yes I am actually a vim user and just wasn't thinking 😆

I type out volta install myself and was actually just following the existing pattern. I'll make a change to have more sensible aliases here.