This commit introduces a major update to the sponsor list display.
- Implements a feature to group cash sponsors below a certain amount threshold. This helps to declutter the display when there are many smaller donations.
- Adds a new `cash-group` display type to handle the rendering of these grouped sponsors.
- Completely redesigns the UI with a new color scheme, gradients, and improved typography for a more polished and visually engaging presentation.
- Updates the styling for individual sponsor cards to improve readability and visual hierarchy.
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