feat: user cmd

[alvarosabu]

Hi, this is the new implementation of the user commands for the renovated version of the CLI. Is a followup from #118

Please make sure to check the previous PR before this one.

How to test this PR

• Clone the repo and pull the branch
• pnpm install
• pnpm run build:stub <-- Important you test it with stub for now

Once build without issues

• Use pnpm run dev user

Unit test

There are 2 Test files related to this command

You can run the tests:

pnpm run test

And coverage

pnpm run coverage

Testing checklist

I'm including the same manual testing checklist I used during TDD

User

storyblok-cli user

• [ ] If user is logged should prompt a message like this
• [ ] If user is not logged in should return You are not logged in. Please login first