feat: enhance column visibility toggle with task counts

- Added `tasks` prop to `ColumnVisibilityToggle` for displaying task counts per status.
- Updated `KanbanFilters` to calculate and show counts for priorities and tags, improving filter visibility.
- Integrated task counts into UI elements for better user feedback on task distribution across statuses, priorities, and tags.

components/kanban/SwimlanesBoard.tsx

@@ -200,6 +200,7 @@ export function SwimlanesBoard({
         <ColumnVisibilityToggle
           hiddenStatuses={hiddenStatuses}
           onToggleStatus={toggleStatusVisibility}
+          tasks={tasks}
         />
       </div>