Enhance synchronization logic and offline handling

- Refactor components to support conditional offline and online CRUD operations.
- Introduce `addToQueue` mechanism for syncing offline changes to the server.
- Add `isChapterContentExist` method and related existence checks in repositories.
- Consolidate data structures and streamline book, chapter, character, and guideline synchronization workflows.
- Encrypt additional character fields and adjust repository inserts for offline data.

components/book/AddNewBookForm.tsx

@@ -138,19 +138,11 @@ export default function AddNewBookForm({setCloseForm}: { setCloseForm: Dispatch<
             };
 
             let bookId: string;
-            if (!isCurrentlyOffline()) {
-                // Online - call API server
-                bookId = await System.authPostToServer<string>('book/add', {
-                    title: title,
-                    subTitle: subtitle,
-                    type: selectedBookType,
-                    summary: summary,
-                    serie: 0,
-                    publicationDate: publicationDate,
-                    desiredWordCount: wordCount,
-                }, token, lang);
-            } else {
+            if (isCurrentlyOffline()) {
                 bookId = await window.electron.invoke<string>('db:book:create', bookData);
+            } else {
+                // Online - call API server
+                bookId = await System.authPostToServer<string>('book/add', bookData, token, lang);
             }
             
             if (!bookId) {