wip(docs): i18n (#12681)

packages/web/src/content.config.ts

@@ -1,7 +1,16 @@
-import { defineCollection } from "astro:content"
-import { docsLoader } from "@astrojs/starlight/loaders"
-import { docsSchema } from "@astrojs/starlight/schema"
+import { defineCollection, z } from "astro:content"
+import { docsLoader, i18nLoader } from "@astrojs/starlight/loaders"
+import { docsSchema, i18nSchema } from "@astrojs/starlight/schema"
+import en from "./content/i18n/en.json"
+
+const custom = Object.fromEntries(Object.keys(en).map((key) => [key, z.string()]))
 
 export const collections = {
   docs: defineCollection({ loader: docsLoader(), schema: docsSchema() }),
+  i18n: defineCollection({
+    loader: i18nLoader(),
+    schema: i18nSchema({
+      extend: z.object(custom).catchall(z.string()),
+    }),
+  }),
 }