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/next-devtools/dev-overlay/dev-overlay.d.ts

@@ -0,0 +1,10 @@
+import type { ReadyRuntimeError } from './utils/get-error-by-type';
+export declare const RenderErrorContext: import("react").Context<{
+    runtimeErrors: ReadyRuntimeError[];
+    totalErrorCount: number;
+}>;
+export declare const useRenderErrorContext: () => {
+    runtimeErrors: ReadyRuntimeError[];
+    totalErrorCount: number;
+};
+export declare function DevOverlay(): import("react/jsx-runtime").JSX.Element;