💡option for cloudflared access login to only output jwt

**Describe the feature you'd like**
Add -no-pretty flag to cloudflared access login making it only output jwt token:

```shell
$ cloudflared access login -no-pretty $url

```

**Describe alternatives you've considered**
Are there any alternatives to solving this problem? If so, what was your experience with them?

**Additional context**
Add any other context or screenshots about the feature request here.