feat(ui): Components refactoring with Tailwind - UI kit, icons, lazy loading images

- Created reusable UI components (Card, Button, Badge, Form, Icon)
- Added PageIcon and NavIcon components with consistent styling
- Refactored all pages to use new UI components
- Added non-blocking image loading with skeleton for book covers
- Created LibraryActions dropdown for library settings
- Added emojis to buttons for better UX
- Fixed Client Component issues with getBookCoverUrl

apps/backoffice/app/components/ui/Input.tsx

@@ -0,0 +1,30 @@
+import { InputHTMLAttributes, SelectHTMLAttributes, ReactNode } from "react";
+
+interface InputProps extends InputHTMLAttributes<HTMLInputElement> {
+  label?: string;
+}
+
+export function Input({ label, className = "", ...props }: InputProps) {
+  return (
+    <input
+      className={`px-4 py-2.5 rounded-lg border border-line bg-background text-foreground placeholder-muted focus:ring-2 focus:ring-primary focus:border-primary ${className}`}
+      {...props}
+    />
+  );
+}
+
+interface SelectProps extends SelectHTMLAttributes<HTMLSelectElement> {
+  label?: string;
+  children: ReactNode;
+}
+
+export function Select({ label, children, className = "", ...props }: SelectProps) {
+  return (
+    <select
+      className={`px-4 py-2.5 rounded-lg border border-line bg-background text-foreground focus:ring-2 focus:ring-primary focus:border-primary ${className}`}
+      {...props}
+    >
+      {children}
+    </select>
+  );
+}