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/@swc/helpers/cjs/_extends.cjs

@@ -0,0 +1,15 @@
+"use strict";
+
+function _extends() {
+    exports._ = _extends = Object.assign || function assign(target) {
+        for (var i = 1; i < arguments.length; i++) {
+            var source = arguments[i];
+            for (var key in source) if (Object.prototype.hasOwnProperty.call(source, key)) target[key] = source[key];
+        }
+
+        return target;
+    };
+
+    return _extends.apply(this, arguments);
+}
+exports._ = _extends;