feat: integrate SEO hook for dynamic metadata management

- Removed hardcoded canonical link from index.html.
- Implemented useSEO hook in layout.tsx to dynamically update SEO metadata including title, description, and canonical URL based on the current route.
- Added new use-seo.ts file containing the SEO hook logic for improved search engine optimization.

index.html

@@ -13,7 +13,6 @@
     
     <!-- Favicon -->
     <link rel="icon" type="image/svg+xml" href="/lite.svg" />
-    <link rel="canonical" href="https://litek.typist.cc/" />
     
     <!-- Open Graph / Facebook -->
     <meta property="og:type" content="website" />