Selectable Scroll

• SelectableScroll is a scroll list system based on Unity's Selectable, designed to assist in implementing scrollable lists with keyboard or gamepad navigation.
• By utilizing object pooling to reuse UI elements, it improves processing speed and reduces memory usage.
• Users can freely customize the scroll behavior and control by creating their own controller components.
• In addition to directional key input, it also supports touch input, implemented using an extension controller provided by the package.
• Other features include a carousel function that automatically scrolls at fixed intervals, and a snapping function — both implemented through custom controllers.