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/lib/is-serializable-props.d.ts

@@ -0,0 +1,4 @@
+export declare class SerializableError extends Error {
+    constructor(page: string, method: string, path: string, message: string);
+}
+export declare function isSerializableProps(page: string, method: string, input: any): true;