feat(blog): add file-based blog with dynamic slugs, MDX content and layout shell

- Introduced blog routing using Next.js App Router
- Implemented dynamic [slug] pages for blog posts
- Added MDX-based content loading via lib/posts
- Integrated shared TopBar layout with navigation
- Established clear content, lib and component separation

apps/public-web/node_modules/next/dist/server/og/image-response.d.ts

@@ -0,0 +1,12 @@
+type OgModule = typeof import('next/dist/compiled/@vercel/og');
+/**
+ * The ImageResponse class allows you to generate dynamic images using JSX and CSS.
+ * This is useful for generating social media images such as Open Graph images, Twitter cards, and more.
+ *
+ * Read more: [Next.js Docs: `ImageResponse`](https://nextjs.org/docs/app/api-reference/functions/image-response)
+ */
+export declare class ImageResponse extends Response {
+    static displayName: string;
+    constructor(...args: ConstructorParameters<OgModule['ImageResponse']>);
+}
+export {};