[FEATURE REQUEST] default packages

[arthursimas1]

I'd like to propose the feature of default packages when a new node version is being added.

For example, I use yarn across all my projects, but I need to explicitly install it for every new node version that nvs adds.

I think having a default-packages file somewhere would solve this problem, like nvm does.

Do you all think that this feature is worth investing a developer-time?

[jasongin]

Sounds like a good feature. I'd accept a PR for that.

The list of default packages could be read from settings.json in the nvs directory, or from a separate file like nvm.