feat: customize README for Tibia Trade marketplace and enhance page accessibility

- Rewrote README.md to describe the Tibia Trade project, including features, setup instructions, technologies, and SEO keywords in Portuguese
- Removed "Pagodera" from thank you page text for rebranding
- Added role and aria-label to main element in home page for better accessibility
- Added metadata generation with localized titles and descriptions to prices page for improved SEO and user experience

next.config.ts

@@ -4,6 +4,13 @@ import createNextIntlPlugin from "next-intl/plugin";
 const withNextIntl = createNextIntlPlugin("./i18n/request.ts");
 
 const nextConfig: NextConfig = {
+  images: {
+    formats: ["image/webp", "image/avif"],
+    deviceSizes: [640, 750, 828, 1080, 1200, 1920],
+    imageSizes: [16, 32, 48, 64, 96, 128, 256],
+  },
+  compress: true,
+  poweredByHeader: false,
   /* config options here */
   async headers() {
     return [