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/book/AddNewBookForm.tsx

@@ -1,4 +1,5 @@
 'use client'
+import * as tauri from '@/lib/tauri';
 import {ChangeEvent, Dispatch, RefObject, SetStateAction, useContext, useEffect, useRef, useState} from "react";
 import {AlertContext} from "@/context/AlertContext";
 import System from "@/lib/models/System";
@@ -139,7 +140,7 @@ export default function AddNewBookForm({setCloseForm}: { setCloseForm: Dispatch<
 
             let bookId: string;
             if (isCurrentlyOffline()) {
-                bookId = await window.electron.invoke<string>('db:book:create', bookData);
+                bookId = await tauri.createBook(bookData);
             } else {
                 bookId = await System.authPostToServer<string>('book/add', bookData, token, lang);
             }