Implement the Hint page frontend part.

[uparkalau]

1. Use the predefined page: frontend\src\scenes\hints\HintDefaultPage.jsx.
2. Add a list of hints using mock data.
3. Implement an edit hint popup that popups up when the "Edit" button is clicked.
4. Create a hint form that appears after clicking the "Create a Hint" button.
5. The hint creation page is also the same as the edit hint page. When editing the hint, the header will read “Edit hint” instead of “New hint”

Link to Figma file: https://www.figma.com/design/MLPbP1HM2L9ON6f88pHTee/Onboarding?node-id=601-3452&t=hr8l93I7nYDD0y5M-1

[gorkem-bwl]

@thomastepi the issue is updated with more comments and new screenshots. Also added a link to the corresponding area in Figma file.