feat(metadata): Update page metadata and enhance video presentation

- Set metadataBase for consistent URL structure across pages
- Add Open Graph and Twitter metadata for improved social sharing
- Implement canonical links and robots directives for SEO optimization
- Replace static image with video previews for a more dynamic user experience

app/(home)/layout.tsx

@@ -19,9 +19,17 @@ const geistMono = Geist_Mono({
 });
 
 export const metadata: Metadata = {
+  metadataBase: new URL("https://opplens.com"),
   title: "Opp lens - AI-Powered Tender Management",
   description:
     "Democratizing Tender Access for SMEs with AI-Powered Tender Management.",
+  alternates: {
+    canonical: "/",
+  },
+  robots: {
+    index: true,
+    follow: true,
+  },
   icons: {
     icon: "/fav-icon.svg",
   },
@@ -151,7 +159,6 @@ export default async function RootLayout({
                   alt="Opp lens logo"
                   width={180}
                   height={30}
-                  priority
                 />
                 <div>
                   <p className="text-black my-2">