feat(docs): migrate from undocs to docus

Author: onmax

docs/.config/docs.yaml

@@ -1,6 +1,7 @@
 node_modules
 .nuxt
 .output
+.data
 dist
 .vercel
 .env*.local

docs/.docs/app.config.ts

@@ -0,0 +1,18 @@
+export default defineAppConfig({
+  docus: {
+    title: 'Nuxt Safe Runtime Config',
+    description: 'Validate Nuxt runtime config at build or runtime using Zod, Valibot, ArkType, or any Standard Schema compatible library.',
+    url: 'https://nuxt-safe-runtime-config.onmax.me',
+    github: 'onmax/nuxt-safe-runtime-config',
+    themeColor: 'green',
+  },
+  ui: {
+    prose: {
+      codeIcon: {
+        valibot: 'custom:valibot',
+        zod: 'simple-icons:zod',
+        arktype: 'custom:arktype',
+      },
+    },
+  },
+})