Be able to add multiple environments when adding a environment variable using vercel env add.
Currently we can do this: vercel env add MY_VAR development.
I would like the ability to add multiple environments like so:vercel env add MY_VAR development, preview,production.
It is possible to add an environment variable to multiple environments when using interactive CLI, but not through flags. It would be great if we can do same thing with the non-interactive CLI. It neater to be able to create 1 variable then 3 if the values are the same across the environments.
We would probably also need this functionality for vercel env rm and vercel env rm