Add terms of use translations, sync detection, and refactor book components

- Introduced new translations for terms of use in French and English locales.
- Added sync status detection logic for books in `BookList` and `BookCard` components.
- Refactored `BookCard` to handle additional props and improve layout flexibility.
- Enhanced `TermsOfUse` component with complete localization support and refuse functionality.
- Updated data decryption logic in Rust services to handle optional fields and additional metadata consistently.
- Improved offline/online synchronization workflows with extended context properties.

context/OfflineContext.ts

@@ -1,11 +1,35 @@
-import {createContext} from 'react';
+import {createContext, Dispatch, SetStateAction} from 'react';
+
+export interface OfflineMode {
+    isManuallyOffline: boolean;
+    isNetworkOnline: boolean;
+    isOffline: boolean;
+    isDatabaseInitialized: boolean;
+    error: string | null;
+}
 
 export interface OfflineContextType {
+    offlineMode: OfflineMode;
+    setOfflineMode: Dispatch<SetStateAction<OfflineMode>>;
+    toggleOfflineMode: () => void;
+    initializeDatabase: (userId: string, encryptionKey?: string) => Promise<boolean>;
     isCurrentlyOffline: () => boolean;
 }
 
+export const defaultOfflineMode: OfflineMode = {
+    isManuallyOffline: false,
+    isNetworkOnline: typeof navigator !== 'undefined' ? navigator.onLine : true,
+    isOffline: false,
+    isDatabaseInitialized: false,
+    error: null
+};
+
 const OfflineContext = createContext<OfflineContextType>({
-    isCurrentlyOffline: () => false,
+    offlineMode: defaultOfflineMode,
+    setOfflineMode: () => {},
+    toggleOfflineMode: () => {},
+    initializeDatabase: async () => false,
+    isCurrentlyOffline: () => false
 });
 
 export default OfflineContext;