Add Map component

[vickystickz]

Description

Add a Map UI component built on maplibre-gl / @vis.gl/react-maplibre, giving the design system a themeable, composable map primitive (markers, popups, routes, raster/COG layers, hillshade, terrain, GeoJSON, arcs, and clustering) instead of consumers wiring up MapLibre by hand.

Key pieces:

• Map — root component with light/dark style switching (follows next-themes-style class/data-theme or system preference), custom controls, and a blank mode for tile-less data-viz use cases
• Marker family — MapMarker, MarkerContent, MarkerPopup, MarkerTooltip, MarkerLabel
• Overlays/layers — MapPopup, MapRoute, MapRasterLayer, MapHillshade, MapTerrain, MapGeoJSON, MapArc, MapClusterLayer
• MapControls and cogUrl helper for Cloud Optimized GeoTIFFs via @geomatico/maplibre-cog-protocol
• Storybook stories (map.stories.tsx) demonstrating each variant, including a drag-to-reorder layers demo using @dnd-kit

Also required build/config changes:

• Exclude maplibre-gl from Vite's dependency pre-bundling in Storybook (.storybook/main.ts) — pre-bundling breaks the worker chunk reference
• New deps: @vis.gl/react-maplibre, @geomatico/maplibre-cog-protocol, @dnd-kit/{core,sortable,utilities}, @types/geojson, @types/d3-scale

Tasks

• Setup Map component + subcomponents in src/components/ui/map.tsx
• Add Storybook stories covering markers, popups, routes, raster/hillshade/terrain, GeoJSON, arcs, and clustering
• Verify light/dark theme switching works in Storybook (both class and data-theme strategies)
• Confirm COG raster layers load via the cog:// protocol
• Document usage/props in Storybook autodocs