multi language support for books and book page redesigned

desktop/src/api/books/books.controller.ts

@@ -101,12 +101,14 @@ export async function getChapterContent(req: any, reply: FastifyReply) {
     try {
         const { bookId, chapter, provider } = req.params;
         const source = req.query.source || 'anilist';
+        const lang = req.query.lang || 'none';
 
         const content = await booksService.getChapterContent(
             bookId,
             chapter,
             provider,
-            source
+            source,
+            lang
         );
 
         return reply.send(content);