chore: sync plugin from AstrBotDevs/AstrBot#5187 (#256)

Co-authored-by: astrbot-plugin-copybara[bot] <261421607+astrbot-plugin-copybara[bot]@users.noreply.github.com>

Author: astrbot-plugin-copybara[bot]

plugins.json

@@ -1,4 +1,15 @@
 {
+  "astrbot-plugin-novel": {
+    "display_name": "群聊AI小说构建插件",
+    "desc": "QQ群群友协作 + AI辅助写作的长篇小说插件（每群独立/知识库/多AI打分/冲突投票/风格模仿/用户修正/EPUB/PDF导出）",
+    "author": "blueraina",
+    "repo": "https://github.com/blueraina/astrbot_plugin_novel",
+    "tags": [
+      "小说",
+      "群聊总结",
+      "共同协作"
+    ]
+  },
   "astrbot-plugin-clonetts": {
     "display_name": "克隆语音",
     "desc": "基于火山引擎音色克隆的文本转语音插件",