feat: add open ax pages

[tilschuenemann]

This PR enables the CLI to open the account experience pages.

Related Issue or Design Document

#269

Checklist

• I have read the contributing guidelines
  and signed the CLA.
• I have referenced an issue containing the design document if my change
  introduces a new feature.
• I have read the security policy.
• I confirm that this pull request does not address a security
  vulnerability. If this pull request addresses a security vulnerability, I
  confirm that I got approval (please contact
  security@ory.sh) from the maintainers to push
  the changes.
• I have added tests that prove my fix is effective or that my feature
  works.
• I have added the necessary documentation within the code base (if
  appropriate).

Further comments

[aeneasr]

Have you tested this manually? Does it work on all operating systems like macOS and windows too?

[tilschuenemann]

I've used the browser package which works cross platform. Tested manually on Ubuntu.

[aeneasr]

Thank you! :) LGTM