Implement Manage therapy - add prescription [GROUP 1]

[almeida1492]

https://www.figma.com/design/u3QbbGOEuDUcnEZSngo9EG/Oh---MediMemo-UI?node-id=46-605&t=u43PhigeIpmrmstf-4

Use MUI components for inputs (look at the prototype).

Entering the page, save an empty prescription: POST /therapies/:id/prescription

When adding prescription-times, call api: POST /prescriptions/:id/prescription-times; for edit: PUT /prescription-times/:id; if you think it’s useful, also implement a button for removing prescription-times, by calling: DELETE /prescription-times/:id

At the end, save prescription using PUT /prescriptions/:id