Remove unused components and models for improved maintainability

- Deleted redundant components (`AddActionButton`, `AlertBox`, `AlertStack`, `BackButton`, `CancelButton`, and `CollapsableArea`) and related files.
- Removed unused models (`Book`, `BookSerie`, `BookTables`, `Character`, and `Chapter`) to reduce codebase clutter.
- Updated project structure and references to reflect these removals.

lib/navigation.ts

@@ -0,0 +1,20 @@
+import {useNavigate, useParams as useRouterParams, Link, useLocation} from 'react-router-dom';
+
+function useRouter() {
+    const navigate = useNavigate();
+    return {
+        push: (path: string) => navigate(path),
+        replace: (path: string) => navigate(path, {replace: true}),
+        back: () => navigate(-1),
+    };
+}
+
+function useParams<T extends Record<string, string>>(): T {
+    return useRouterParams() as T;
+}
+
+function usePathname(): string {
+    return useLocation().pathname;
+}
+
+export {Link, useRouter, useParams, usePathname};