Story: Update Site Accessibility Settings button

[heathermoses]

Update Site Accessibility Settings button

As a user, I want to be able to adjust color and text size settings, so that I can use the ALL website in the best way that works for me.

Associated Epic: #619

We don't have a design in the Figma for how this should look, so this story is up to the implementer's interpretation.

Definition of Done

• Acceptance criteria defined
• Solution tasks specified
• Feature branch created
• Unit tests written (on API code only for now)
• Solution passes full suite of unit tests
• Design documents updated if needed
• Pull request created
• Code is reviewed
• Code is merged to develop branch
• Tests pass on CI
• Deployed to staging environment
• Acceptance criteria is met

Acceptance Criteria

• Given initial context, when event occurs, then some desired outcome
• Given initial context, when event occurs, then some desired outcome
• Given initial context, when event occurs, then some desired outcome

Solution Tasks

• [Task 1]
• [Task 2]
• [Task 3]