feat: update UI components and styles

- Updated `AnimatedBeam` component:
  - Changed `gradientStartColor` from `#ffaa40` to `#000000` and `gradientStopColor` from `#9c40ff` to `#9c0000`.
  - Improved path calculation logic by ensuring refs are not null and added reverse logic for path calculation.
  - Adjusted dependencies in `useEffect` for better performance.

- Modified `BackgroundBeams` component:
  - Changed width and height classes for animated divs from `w-[50rem]` and `h-[50rem]` to `w-200` and `h-200`, and from `w-[30rem]` and `h-[30rem]` to `w-120` and `h-120`.

- Refactored `BorderBeam` component:
  - Updated mask styles for better clarity and consistency.

- Enhanced `CardSpotlight` component:
  - Added `opacity` and `transitionDuration` props for better control over spotlight effects.
  - Implemented touch event handling for mobile devices.

- Improved `Spotlight` component:
  - Added width and height state management for better responsiveness.
  - Implemented scaling for mouse coordinates based on component dimensions.

- Fixed `TextGenerateEffect` component:
  - Ensured `animate` and `duration` are included in the dependency array of `useEffect`.

- Updated `Field` components:
  - Adjusted class names for better styling consistency and improved accessibility.

- Refined `Kbd` component:
  - Updated class names for tooltip content styling.

- Updated `NavigationMenu`:
  - Moved `navigationMenuTriggerStyle` to a separate file for better organization.

- Refactored `Pagination` component:
  - Updated import paths for button variants.

- Enhanced `SelectTrigger` component:
  - Improved class names for better styling consistency.

- Refactored `Sidebar` components:
  - Moved sidebar context and variants to separate files for better organization and maintainability.

- Added new `badge-variants`, `button-group-variants`, and `button-variants` files for better styling management.

- Created `navigation-menu-variants` and `sidebar-variants` files for improved organization of styles.

- Added `SidebarContext` for better state management in sidebar components.