Add first business article and article layout

node_modules/@astrojs/markdown-remark/dist/rehype-collect-headings.d.ts

@@ -0,0 +1,7 @@
+import type { RehypePlugin } from './types.js';
+/**
+ * Rehype plugin that adds `id` attributes to headings based on their text content.
+ *
+ * @see https://docs.astro.build/en/guides/markdown-content/#heading-ids-and-plugins
+ */
+export declare function rehypeHeadingIds(): ReturnType<RehypePlugin>;