Support browser login workflow #1309
Description
TL;DR
Allow to setup a context with a token using a browser.
Expected behavior
- In the CLI, initiate the creation of a new context
- Either prompt for the desired authentication flow (manual, or browser) or read it from a flag
- Open a browser for the user to authenticate in console.hetzner.com, or directly jump to next step if already authenticated (should we ask confirmation about the current account?)
- Select the project for which we should setup a new token
- Configure the new token name and permissions, (ideally also set an expiration date)
- Create the new token in the console and save the token in a CLI
context