✨ Pinned post & Total vote counts

lib/models/post.dart

@@ -18,6 +18,7 @@ class Post {
   Post? repostTo;
   Realm? realm;
   DateTime? publishedAt;
+  DateTime? pinnedAt;
   bool? isDraft;
   int authorId;
   Account author;
@@ -39,6 +40,7 @@ class Post {
     required this.repostTo,
     required this.realm,
     required this.publishedAt,
+    required this.pinnedAt,
     required this.isDraft,
     required this.authorId,
     required this.author,
@@ -70,6 +72,9 @@ class Post {
         publishedAt: json['published_at'] != null
             ? DateTime.parse(json['published_at'])
             : null,
+        pinnedAt: json['pinned_at'] != null
+            ? DateTime.parse(json['pinned_at'])
+            : null,
         isDraft: json['is_draft'],
         authorId: json['author_id'],
         author: Account.fromJson(json['author']),
@@ -93,6 +98,7 @@ class Post {
         'repost_to': repostTo?.toJson(),
         'realm': realm?.toJson(),
         'published_at': publishedAt?.toIso8601String(),
+        'pinned_at': pinnedAt?.toIso8601String(),
         'is_draft': isDraft,
         'author_id': authorId,
         'author': author.toJson(),