feat(SEO): Add exclude filter to sitemap

- Excludes pages containing "/blog/tags" or "/blog/techs" from the sitemap.
- Reduces unnecessary crawling and indexing of non-essential sections.
- Improves SEO by focusing the sitemap on more valuable content.

astro.config.mjs

@@ -8,7 +8,11 @@ import icon from "astro-icon";
 // https://astro.build/config
 export default defineConfig({
   site: "https://neonmint.efeele.dev",
-  integrations: [preact(), icon(), sitemap()],
+  integrations: [preact(), icon(), sitemap({
+    filter: (page) =>
+      !page.includes("/blog/tags") &&
+      !page.includes("/blog/techs"),
+  }),],
 
   vite: {
     plugins: [tailwindcss()],