feat: Add location sharing

lib/widgets/event_content/map_bubble.dart

@@ -0,0 +1,58 @@
+import 'package:flutter_map/flutter_map.dart';
+import 'package:latlong2/latlong.dart';
+import 'package:flutter/material.dart';
+
+class MapBubble extends StatelessWidget {
+  final double latitude;
+  final double longitude;
+  final double zoom;
+  final double width;
+  final double height;
+  final double radius;
+  const MapBubble({
+    this.latitude,
+    this.longitude,
+    this.zoom = 14.0,
+    this.width = 400,
+    this.height = 400,
+    this.radius = 10.0,
+    Key key,
+  }) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return ClipRRect(
+      borderRadius: BorderRadius.circular(radius),
+      child: Container(
+        constraints: BoxConstraints.loose(Size(width, height)),
+        child: AspectRatio(
+          aspectRatio: width / height,
+          child: FlutterMap(
+            options: MapOptions(
+              center: LatLng(latitude, longitude),
+              zoom: zoom,
+            ),
+            layers: [
+              TileLayerOptions(
+                urlTemplate:
+                    'https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png',
+                subdomains: ['a', 'b', 'c'],
+              ),
+              MarkerLayerOptions(
+                markers: [
+                  Marker(
+                    point: LatLng(latitude, longitude),
+                    builder: (context) => Icon(
+                      Icons.location_pin,
+                      color: Colors.red,
+                    ),
+                  ),
+                ],
+              ),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+}