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/shared/lib/app-dynamic.d.ts

@@ -0,0 +1,15 @@
+import type React from 'react';
+import type { JSX } from 'react';
+import type { LoadableGeneratedOptions, DynamicOptionsLoadingProps, Loader, LoaderComponent } from './lazy-dynamic/types';
+export { type LoadableGeneratedOptions, type DynamicOptionsLoadingProps, type Loader, type LoaderComponent, };
+export type DynamicOptions<P = {}> = LoadableGeneratedOptions & {
+    loading?: () => JSX.Element | null;
+    loader?: Loader<P>;
+    loadableGenerated?: LoadableGeneratedOptions;
+    modules?: string[];
+    ssr?: boolean;
+};
+export type LoadableOptions<P = {}> = DynamicOptions<P>;
+export type LoadableFn<P = {}> = (opts: LoadableOptions<P>) => React.ComponentType<P>;
+export type LoadableComponent<P = {}> = React.ComponentType<P>;
+export default function dynamic<P = {}>(dynamicOptions: DynamicOptions<P> | Loader<P>, options?: DynamicOptions<P>): React.ComponentType<P>;