feat(add doc): add document to project

docs/src/content/config.ts

@@ -0,0 +1,7 @@
+import { defineCollection } from 'astro:content';
+import { docsSchema, i18nSchema } from '@astrojs/starlight/schema';
+
+export const collections = {
+  docs: defineCollection({ schema: docsSchema() }),
+  i18n: defineCollection({ type: 'data', schema: i18nSchema() }),
+};