Prompt a re-login when users change their own passwords

[jamesreprise]

What is the goal of this PR?

Console now quits upon a user changing their own password, rather than having a user be left in a session with invalid credentials (which they will only discover on running subsequent commands).

Fixes: #200

What are the changes implemented in this PR?

We've added checks to determine whether password sets and updates were successful, and if so, prompt the user to log in again before quitting.

[typedb-bot]

PR Review Checklist

Do not edit the content of this comment. The PR reviewer should simply update this comment by ticking each review item below, as they get completed.

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Trivial Change

• [x] This change is trivial and does not require a code or architecture review.

Code

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• [ ] Packages, classes, and methods are grouped into cohesive and consistent domain model.
• [ ] The code is canonical and the minimum required to achieve the goal.
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Architecture

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• [ ] The architecture is extensible and scalable.