Migrate from window.electron to tauri IPC functions across components

- Replaced `window.electron.invoke` calls with equivalent `tauri` function calls for all IPC interactions.
- Removed `electron.d.ts` TypeScript definitions as they are no longer needed.
- Updated related logic for offline/online state synchronization.
- Added `types.rs` and `shared/mod.rs` modules to support Tauri IPC integration with Rust enums and shared logic.
- Refactored IPC request queues to use updated handler names for consistency with Tauri.

components/editor/TextEditor.tsx

@@ -36,6 +36,7 @@ import OfflineContext, {OfflineContextType} from "@/context/OfflineContext";
 import {LocalSyncQueueContext, LocalSyncQueueContextProps} from "@/context/SyncQueueContext";
 import {BooksSyncContext, BooksSyncContextProps} from "@/context/BooksSyncContext";
 import {SyncedBook} from "@/lib/models/SyncedBook";
+import * as tauri from '@/lib/tauri';
 
 interface ToolbarButton {
     action: () => void;
@@ -302,12 +303,18 @@ export default function TextEditor() {
                 currentTime: mainTimer
             };
             if (isCurrentlyOffline() || book?.localBook){
-                response = await window.electron.invoke<boolean>('db:chapter:content:save', saveData);
+                response = await tauri.saveChapterContent({
+                    chapterId: saveData.chapterId,
+                    version: saveData.version,
+                    content: saveData.content,
+                    totalWordCount: saveData.totalWordCount,
+                    contentId: saveData.chapterId,
+                });
             } else {
                 response = await System.authPostToServer<boolean>(`chapter/content`, saveData, session?.accessToken, lang);
 
                 if (localSyncedBooks.find((syncedBook: SyncedBook): boolean => syncedBook.id === book?.bookId)) {
-                    addToQueue('db:chapter:content:save', saveData);
+                    addToQueue('save_chapter_content', {data: saveData});
                 }
             }
             if (!response) {