Interactive Map with Marker and Circle APIs
GET /api/marker?lat=<lat>&lng=<lng>[&icon=<icon>][&title=<title>]
Add a marker at the specified coordinates
GET /api/circle?lat=<lat>&lng=<lng>&radius=<radius>[&icon=<icon>][&title=<title>]
Add a circle at the specified coordinates with given radius
POST /api/alert?message=<message>&type=<type>
Create an alert (type: danger/warning/info/success)
GET /api/alerts
Get all active alerts
POST /api/alerts/clear
Clear all alerts