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/image-external.d.ts

@@ -0,0 +1,15 @@
+import type { ImageLoaderProps } from './image-config';
+import type { ImageProps, ImageLoader, StaticImageData } from './get-img-props';
+import { Image } from '../../client/image-component';
+/**
+ * For more advanced use cases, you can call `getImageProps()`
+ * to get the props that would be passed to the underlying `<img>` element,
+ * and instead pass to them to another component, style, canvas, etc.
+ *
+ * Read more: [Next.js docs: `getImageProps`](https://nextjs.org/docs/app/api-reference/components/image#getimageprops)
+ */
+export declare function getImageProps(imgProps: ImageProps): {
+    props: import("./get-img-props").ImgProps;
+};
+export default Image;
+export type { ImageProps, ImageLoaderProps, ImageLoader, StaticImageData };