[Showcase] Vue implementation in my mapcn-vue project #332

Hi,

First off, thank you for building and maintaining Valhalla — it's an incredible open-source routing engine and the public API has been invaluable for our project.

I built a set of interactive demos with the APIs provided by the Valhalla web-app (via valhalla1.openstreetmap.de). These are part of mapcn-vue, a Vue 3 + MapLibre GL component library:

• Route Planning — A-to-B routing with turn-by-turn directions: https://mapcn-vue.geoql.in/examples/valhalla-route-planning
• Delivery Tracking — Live delivery simulation with ETA updates: https://mapcn-vue.geoql.in/examples/valhalla-delivery-tracking
• Multi-Stop Routes — Traveling salesman optimization with draggable waypoints: https://mapcn-vue.geoql.in/examples/valhalla-multi-stop
• Trip Playback — Animated route replay with timeline scrubbing: https://mapcn-vue.geoql.in/examples/valhalla-trip-playback

All demos use Valhalla's route, optimized_route, isochrone, and sources_to_targets endpoints. Just wanted to share in case it's useful as a reference for other developers, and to say thanks for making this possible!