feat!: support of solid, dotted, dashed styles for polygons, with optimized rendering

example/lib/pages/polygon.dart

@@ -55,12 +55,12 @@ class _PolygonPageState extends State<PolygonPage> {
         LatLng(46.22, -0.11),
         LatLng(44.399, 1.76),
       ],
-      isDotted: true,
+      pattern: StrokePattern.dashed(segments: const [50, 20]),
       borderStrokeWidth: 4,
       borderColor: Colors.lightBlue,
       color: Colors.yellow,
       hitValue: (
-        title: 'Polygon With Dotted Borders',
+        title: 'Polygon With Dashed Borders',
         subtitle: '...',
       ),
     ),
@@ -105,7 +105,7 @@ class _PolygonPageState extends State<PolygonPage> {
         LatLng(54, -14),
         LatLng(54, -18),
       ].map((latlng) => LatLng(latlng.latitude, latlng.longitude + 8)).toList(),
-      isDotted: true,
+      pattern: const StrokePattern.dotted(),
       holePointsList: [
         const [
           LatLng(52, -17),
@@ -151,7 +151,7 @@ class _PolygonPageState extends State<PolygonPage> {
       ]
           .map((latlng) => LatLng(latlng.latitude - 6, latlng.longitude + 8))
           .toList(),
-      isDotted: true,
+      pattern: const StrokePattern.dotted(),
       holePointsList: [
         const [
           LatLng(52, -17),

example/lib/pages/polyline.dart

@@ -104,7 +104,7 @@ class _PolylinePageState extends State<PolylinePage> {
       ],
       strokeWidth: 10,
       color: Colors.orange,
-      pattern: const PolylinePattern.dotted(
+      pattern: const StrokePattern.dotted(
         spacingFactor: 3,
       ),
       borderStrokeWidth: 8,
@@ -138,7 +138,7 @@ class _PolylinePageState extends State<PolylinePage> {
       ],
       strokeWidth: 6,
       color: Colors.green[900]!,
-      pattern: PolylinePattern.dashed(
+      pattern: StrokePattern.dashed(
         segments: const [50, 20, 30, 20],
       ),
       borderStrokeWidth: 6,

lib/flutter_map.dart

@@ -28,10 +28,11 @@ export 'package:flutter_map/src/layer/attribution_layer/rich/source.dart';
 export 'package:flutter_map/src/layer/attribution_layer/rich/widget.dart';
 export 'package:flutter_map/src/layer/attribution_layer/simple.dart';
 export 'package:flutter_map/src/layer/circle_layer/circle_layer.dart';
-export 'package:flutter_map/src/layer/general/hit_detection.dart';
-export 'package:flutter_map/src/layer/general/mobile_layer_transformer.dart';
-export 'package:flutter_map/src/layer/general/translucent_pointer.dart';
 export 'package:flutter_map/src/layer/marker_layer/marker_layer.dart';
+export 'package:flutter_map/src/layer/misc/hit_detection.dart';
+export 'package:flutter_map/src/layer/misc/line_patterns/stroke_pattern.dart';
+export 'package:flutter_map/src/layer/misc/mobile_layer_transformer.dart';
+export 'package:flutter_map/src/layer/misc/translucent_pointer.dart';
 export 'package:flutter_map/src/layer/overlay_image_layer/overlay_image_layer.dart';
 export 'package:flutter_map/src/layer/polygon_layer/polygon_layer.dart';
 export 'package:flutter_map/src/layer/polyline_layer/polyline_layer.dart';