fix:添加addPolyline方法增加String lineId,以及 PolylineType lineType，lineId用于记录，lineType用于记录画线的样式

plugins/map_mapkit_ios/ios/Classes/MapView/Model/Models.swift

@@ -47,10 +47,19 @@ struct ATMapPadding: Codable {
     }
 }
 
+// 定义线的类型枚举
+enum PolylineType: String, Codable {
+    case solid      // 实线
+    case dashed     // 虚线
+    case dotted     // 点线
+    case mixed      // 混合样式
+}
+
 class ATMapPolyline: NSObject, Codable {
     var id: String = UUID().uuidString
+    var lineId: String              // 新增：用于记录的线ID
+    var lineType: PolylineType      // 新增：用于记录线的样式
     var points: [CLLocationCoordinate2D]
-    
     var mapPadding: ATMapPadding?
     
     var polyline: MKPolyline {
@@ -58,12 +67,14 @@ class ATMapPolyline: NSObject, Codable {
     }
 
     enum CodingKeys: String, CodingKey {
-        case points, mapPadding
+        case lineId, lineType, points, mapPadding
     }
     
     required init(from decoder: Decoder) throws {
         let container = try decoder.container(keyedBy: CodingKeys.self)
         
+        lineId = try container.decode(String.self, forKey: .lineId)
+        lineType = try container.decode(PolylineType.self, forKey: .lineType)
         points = try container.decode([CLLocationCoordinate2D].self, forKey: .points)
         
         if container.contains(.mapPadding) {
@@ -73,11 +84,23 @@ class ATMapPolyline: NSObject, Codable {
     
     func encode(to encoder: Encoder) throws {
         var container = encoder.container(keyedBy: CodingKeys.self)
+        try container.encode(lineId, forKey: .lineId)
+        try container.encode(lineType, forKey: .lineType)
         try container.encode(points, forKey: .points)
         try container.encodeIfPresent(mapPadding, forKey: .mapPadding)
     }
+    
+    // 初始化方法
+    init(lineId: String, lineType: PolylineType, points: [CLLocationCoordinate2D], mapPadding: ATMapPadding? = nil) {
+        self.lineId = lineId
+        self.lineType = lineType
+        self.points = points
+        self.mapPadding = mapPadding
+        super.init()
+    }
 }
 
+
 class ATMapMarker: NSObject, Codable {
     var id: String
     var markerName: String?