opt: unify trending api & feat: search recommend (#694)

* opt: unify trending api

* opt: disable icon

* feat: search recommend

* mod: recommend api

lib/models/search/search_trending/trending_list.dart

@@ -1,47 +1,28 @@
-class TrendingList {
-  int? position;
+class SearchKeywordList {
   String? keyword;
-  String? showName;
-  int? wordType;
   String? icon;
+  bool? showLiveIcon;
+
+  SearchKeywordList.fromJson(Map<String, dynamic> json) {
+    keyword = json['keyword'] as String?;
+  }
+}
+
+class TrendingList extends SearchKeywordList {
+  String? showName;
+  // 4/5热 11话题 8普通 7直播
+  int? wordType;
   int? hotId;
   String? isCommercial;
   int? resourceId;
-  bool? showLiveIcon;
 
-  TrendingList({
-    this.position,
-    this.keyword,
-    this.showName,
-    this.wordType,
-    this.icon,
-    this.hotId,
-    this.isCommercial,
-    this.resourceId,
-    this.showLiveIcon,
-  });
-
-  factory TrendingList.fromJson(Map<String, dynamic> json) => TrendingList(
-        position: json['position'] as int?,
-        keyword: json['keyword'] as String?,
-        showName: json['show_name'] as String?,
-        wordType: json['word_type'] as int?,
-        icon: json['icon'] as String?,
-        hotId: json['hot_id'] as int?,
-        isCommercial: json['is_commercial'] as String?,
-        resourceId: json['resource_id'] as int?,
-        showLiveIcon: json['show_live_icon'] as bool?,
-      );
-
-  Map<String, dynamic> toJson() => {
-        'position': position,
-        'keyword': keyword,
-        'show_name': showName,
-        'word_type': wordType,
-        'icon': icon,
-        'hot_id': hotId,
-        'is_commercial': isCommercial,
-        'resource_id': resourceId,
-        'show_live_icon': showLiveIcon,
-      };
+  TrendingList.fromJson(Map<String, dynamic> json) : super.fromJson(json) {
+    showName = json['show_name'] as String?;
+    wordType = json['word_type'] as int?;
+    icon = json['icon'] as String?;
+    hotId = json['hot_id'] as int?;
+    isCommercial = json['is_commercial'] as String?;
+    resourceId = json['resource_id'] as int?;
+    showLiveIcon = json['show_live_icon'] as bool?;
+  }
 }