Add a feature to clear session data

[vickytnz]

What is the issue?

There is no way in the prototype kit to clear data. This is possible in the GOV.UK prototype kit with pages designed to do it. https://prototype-kit.service.gov.uk/docs/pass-data

[frankieroberto]

Agree this would be a good feature to add.

I added this to my prototype here: https://github.com/NHSDigital/record-a-vaccination-prototype/blob/main/app/routes/prototype-admin.js

[vickytnz]

Will also be good to use the examples from GOV.UK of:

• Clear screen https://github.com/alphagov/govuk-prototype-kit/blob/main/lib/nunjucks/views/manage-prototype/clear-data.njk#L13
• clear success screen https://github.com/alphagov/govuk-prototype-kit/blob/main/lib/nunjucks/views/manage-prototype/clear-data-success.njk
• link in footer

[joelanman]

something I always want to add - a link to return to where you were in the prototype, after clearing data