Quick filter bar

## Summary

We have a requirement to be able to filter results by a set of predefined options (active state in this example). So we will be creating a simple bar that will have a set of buttons that can be toggled to control which results are shown on a page. We did consider if this component should be integrated into the header but will be making it as a stand-alone component to maximise versatility which then could still be added to the header at a later date.

## 💰 User value

To be populated in the future.

## 📚 User Stories

To be populated in the future.

## 📝 Acceptance Criteria

To be populated in the future.

## ✏ Designs
Example of the filter bar.

No file, test, or entry point is named. Review existing standalone components and the linked filter-bar design first; clarify the predefined options, toggle behavior, result integration, and acceptance criteria before implementation.

Written by the indexing model from the issue text.