🎨 Use feature based folder structure

lib/posts/posts_models/heatmap.g.dart

@@ -0,0 +1,36 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'heatmap.dart';
+
+// **************************************************************************
+// JsonSerializableGenerator
+// **************************************************************************
+
+_SnHeatmap _$SnHeatmapFromJson(Map<String, dynamic> json) => _SnHeatmap(
+  unit: json['unit'] as String,
+  periodStart: DateTime.parse(json['period_start'] as String),
+  periodEnd: DateTime.parse(json['period_end'] as String),
+  items: (json['items'] as List<dynamic>)
+      .map((e) => SnHeatmapItem.fromJson(e as Map<String, dynamic>))
+      .toList(),
+);
+
+Map<String, dynamic> _$SnHeatmapToJson(_SnHeatmap instance) =>
+    <String, dynamic>{
+      'unit': instance.unit,
+      'period_start': instance.periodStart.toIso8601String(),
+      'period_end': instance.periodEnd.toIso8601String(),
+      'items': instance.items.map((e) => e.toJson()).toList(),
+    };
+
+_SnHeatmapItem _$SnHeatmapItemFromJson(Map<String, dynamic> json) =>
+    _SnHeatmapItem(
+      date: DateTime.parse(json['date'] as String),
+      count: (json['count'] as num).toInt(),
+    );
+
+Map<String, dynamic> _$SnHeatmapItemToJson(_SnHeatmapItem instance) =>
+    <String, dynamic>{
+      'date': instance.date.toIso8601String(),
+      'count': instance.count,
+    };