refactor: Make entire consent box clickable

[maiertech]

Description of change

This PR refactors the Checkbox components to optionally accept a custom store. This custom store can be used outside the component to change styling based on the store value.

Links to any relevant issues

Fixes #221. Check the issue for a screenshot of what was implemented.

How the change has been tested

• Manual testing the UI of the /welcome/terms route (onboarding workflow).
• All routes that use the Checkbox component in their UI need to be tested. There should be no visible change.

Definition of Done checklist

Add an x to the boxes that are relevant to your changes.

• [x] I have followed the contribution guidelines for this project
• [x] I have performed a self-review of my own code
• [x] I have commented my code, particularly in hard-to-understand areas
• [ ] I have made corresponding changes to the documentation
• [ ] I have added tests that prove my fix is effective or that my feature works
• [x] New and existing unit tests pass locally with my changes

[daniel-mader]

If we merge it like this, only the areas colored in orange would react to a click, and not the entire box, right?

[maiertech]

If we merge it like this, only the areas colored in orange would react to a click, and not the entire box, right?

Ouch, yes.