Add a feedback form to our phase banner

[jakecosgrove]

Description

This PR adds a link to a newly created general feedback form called 'Give feedback to NHS Notify' to our phase banner, replacing the 'News' notification that it currently provides about NHS App messaging.

Having the feedback form in the banner follows patterns used in both GOV.UK and NHS.UK, specifically the phase banner component.

It also means that users can access the feedback form on any page.

Context

Feedback from users about how NHS Notify could be improved is fragmented and given in different formats at different parts of the overall user journey. This is a problem because product and development teams do not have a consistent source of information that they can draw from to inform product development work

There is also a problem that non-standard feature requests come at multiple points in the user journey, and do not always make to product leads for prioritisation. This leads to teams delivering features that are non-standard without the necessary oversight and discovery into the value and need of the feature. This means that developer resource might not be being used as effectively as it could be.

Type of changes

• Refactoring (non-breaking change)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would change existing functionality)
• Bug fix (non-breaking change which fixes an issue)

Checklist

• I am familiar with the contributing guidelines
• I have followed the code style of the project
• I have added tests to cover my changes
• I have updated the documentation accordingly
• This PR is a result of pair or mob programming

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Sensitive Information Declaration

To ensure the utmost confidentiality and protect your and others privacy, we kindly ask you to NOT including PII (Personal Identifiable Information) / PID (Personal Identifiable Data) or any other sensitive data in this PR (Pull Request) and the codebase changes. We will remove any PR that do contain any sensitive information. We really appreciate your cooperation in this matter.

• I confirm that neither PII/PID nor sensitive data are included in this PR and the codebase changes.

[jakecosgrove]

This pull request needs to be reviewed by NHS Notify's UCD team before approval and will likely need sign-off by head of product before rolling out across the site.