add fumadocs

lib/metadata.ts

@@ -0,0 +1,7 @@
+import { createMetadataImage } from 'fumadocs-core/server'
+import { source } from './source'
+
+export const metadataImage = createMetadataImage({
+  imageRoute: '/docs-og',
+  source,
+})

lib/source.ts

@@ -0,0 +1,7 @@
+import { loader } from 'fumadocs-core/source'
+import { docs } from '../.source'
+
+export const source = loader({
+  baseUrl: '/docs',
+  source: docs.toFumadocsSource(),
+})