Introduce blank accessibility statement

[DMurf]

Description

Copy t+c page and rename to Accessibility, duplicate and edit tests.

Fixes # (issue)

Type of change

Please delete options that are not relevant.

• New feature (non-breaking change which adds functionality)

How Has This Been Tested?

Automated tests + visual test with deploy review app.

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

[github-actions]

Code Coverage Report: Only Changed Files listed

Package	Coverage
Overall Coverage	🟢 61.16%

Minimum allowed coverage is 0%, this run produced 61.16%

[github-actions]

Review app for PR 276 was deleted