[feat] Add cover felid to Comic model

.idea/.idea.Abyss/.idea/workspace.xml

@@ -97,7 +97,7 @@
     "RunOnceActivity.git.unshallow": "true",
     "XThreadsFramesViewSplitterKey": "0.55813956",
     "git-widget-placeholder": "main",
-    "last_opened_file_path": "/home/acite/embd/WebProjects/Abyss/README.md",
+    "last_opened_file_path": "/home/acite/AciteProjects/Abyss/README.md",
     "node.js.detected.package.eslint": "true",
     "node.js.detected.package.tslint": "true",
     "node.js.selected.package.eslint": "(autodetect)",
@@ -248,6 +248,8 @@
       <workItem from="1759036019712" duration="20642000" />
       <workItem from="1759072866075" duration="5798000" />
       <workItem from="1759137056827" duration="1026000" />
+      <workItem from="1759150007653" duration="169000" />
+      <workItem from="1759314718830" duration="55000" />
     </task>
     <servers />
   </component>

Abyss/Model/Media/Comic.cs

@@ -8,6 +8,8 @@ public class Comic
     public string ComicName { get; set; } = "";
     [JsonProperty("page_count")]
     public int PageCount { get; set; }
+    [JsonProperty("cover")]
+    public string? Cover { get; set; } = ""; 
     [JsonProperty("bookmarks")]
     public List<Bookmark> Bookmarks { get; set; } = new();
     [JsonProperty("author")]