docs: add @nuxt/ui-pro source (#2775)

docs/content.config.ts

@@ -1,24 +1,45 @@
 import { defineCollection, z } from '@nuxt/content'
+import { resolve } from 'node:path'
+
+const schema = z.object({
+  framework: z.string().optional(),
+  module: z.string().optional(),
+  navigation: z.object({
+    title: z.string().optional()
+  }),
+  links: z.array(z.object({
+    label: z.string(),
+    icon: z.string(),
+    avatar: z.object({
+      src: z.string(),
+      alt: z.string()
+    }).optional(),
+    to: z.string(),
+    target: z.string().optional()
+  }))
+})
+
+const pro = process.env.NUXT_UI_PRO_PATH
+  ? {
+      cwd: resolve(__dirname, process.env.NUXT_UI_PRO_PATH, 'docs'),
+      include: 'content/**',
+      prefix: '/'
+    }
+  : process.env.NUXT_GITHUB_TOKEN
+    ? {
+        repository: 'https://github.com/nuxt/ui-pro/tree/v3',
+        include: 'docs/content/**',
+        prefix: '/',
+        authToken: process.env.NUXT_GITHUB_TOKEN
+      }
+    : undefined
 
 export const collections = {
   content: defineCollection({
     type: 'page',
-    source: '**/*',
-    schema: z.object({
-      framework: z.string().optional(),
-      navigation: z.object({
-        title: z.string().optional()
-      }),
-      links: z.array(z.object({
-        label: z.string(),
-        icon: z.string(),
-        avatar: z.object({
-          src: z.string(),
-          alt: z.string()
-        }).optional(),
-        to: z.string(),
-        target: z.string().optional()
-      }))
-    })
+    source: [{
+      include: '**/*'
+    }, pro!],
+    schema
   })
 }