优化

app/src/main/assets/defaultData/coverRule.json

@@ -0,0 +1,5 @@
+{
+  "enable": true,
+  "searchUrl": "https://api.yousuu.com/api/search?type=title&value={{key}}&page=1&highlight=0&from=search",
+  "coverRule": "@js:java.getString(\"$..books[?(@.author == '\" + book.author + \"')].cover\")"
+}