docs(rspress): add llms.txt llms-full.txt based on "@rspress/plugin-llms" (#7170)

Author: SoonIter

packages/document/main-doc/rspress.config.ts

@@ -1,12 +1,16 @@
 import path from 'path';
 import { pluginSass } from '@rsbuild/plugin-sass';
+import { pluginLlms } from '@rspress/plugin-llms';
 import { transformerNotationHighlight } from '@shikijs/transformers';
 import { defineConfig } from 'rspress/config';
 
 const docPath = path.join(__dirname, 'docs');
 
 export default defineConfig({
   root: docPath,
+  title: 'Modern.js',
+  description:
+    'The Modern.js framework is a progressive web framework based on React. At ByteDance, we use Modern.js to build upper-level frameworks that have supported the development of thousands of web applications.',
   base: '/',
   logo: 'https://lf-cdn-tos.bytescm.com/obj/static/webinfra/modern-js-website/assets/images/images/modernjs-logo.svg',
   icon: 'https://lf3-static.bytednsdoc.com/obj/eden-cn/uhbfnupenuhf/favicon.ico',
@@ -18,6 +22,7 @@ export default defineConfig({
       transformers: [transformerNotationHighlight()],
     },
   },
+  plugins: [pluginLlms()],
   search: {
     codeBlocks: true,
   },