Add initial "Copy of answers" screen

[chao-xian]

What problem does this pull request solve?

Add a new screen in the journey asking the user if they want to receive a copy of their answers.

This doesn't do anything yet once the user responds, but as it's behind a feature flag it won't affect anything. This PR is simply to split the work so that the next phase is sending the user to GOV.UK OneLogin.

You should be able to see the new screen at:

https://pr-1967.submit.review.forms.service.gov.uk/form/5/a-welsh-form/copy-of-answers (once previous answers are supplied)

Trello card: https://trello.com/c/T7Pbl1wf

Things to consider when reviewing

• Ensure that you consider the wider context.
• Does it work when run on your machine?
• Is it clear what the code is doing?
• Do the commit messages explain why the changes were made?
• Are there all the unit tests needed?
• Do the end to end tests need updating before these changes will pass?
• Has all relevant documentation been updated?

[sonarqubecloud]

Quality Gate passed

Issues
1 New issue
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
4.0% Duplication on New Code

See analysis details on SonarQube Cloud

[github-actions]

🎉 A review copy of this PR has been deployed! It is made of up two components

1. A review copy of forms-runner
2. A production copy of forms-admin

Important

Not all of the functionality of forms-runner is present in review apps.
Functionality such as sending emails, file upload, and S3 submission types are
deliberately disabled for the sake of simplifying review apps.

You should use the full dev environment to test the functionality which is disabled here.

It may take 5 minutes or so for the application to be fully deployed and working. If it still isn't ready
after 5 minutes, there may be something wrong with the ECS task. You will need to go to the integration AWS account
to debug, or otherwise ask an infrastructure person.

For the sign in details and more information, see the review apps wiki page.

[hannahkc]

Content looks fine now. (we'll update the Welsh when we get the translations)

content issues are fixed.

[thomasiles]

This looks good and works well for me locally, nice one! 🏅

I noticed the page doesn't play back the users choice if they use the back button/link. I don't know what it should do but we might want to point it out to the design team at some point to get their view. Not for this PR though, just something in the future.