docs: add chinese readme and docs website (#76)

## Summary by Sourcery

Add a new documentation site package and a Chinese README to improve
project documentation and accessibility.

New Features:
- Introduce a dedicated @dropout/docs React Router application powered
by Fumadocs for hosting the project documentation.

Documentation:
- Add a Chinese README file providing an overview, installation, build
instructions, and contribution guidelines for Chinese-speaking users.
- Set up initial docs content, navigation, and metadata within the new
docs site, including example pages and search endpoint configuration.

1 files changed, 23 insertions, 0 deletions

diff --git a/packages/docs/react-router.config.ts b/packages/docs/react-router.config.ts
new file mode 100644
index 0000000..cfcfbe4
--- /dev/null
+++ b/packages/docs/react-router.config.ts
@@ -0,0 +1,23 @@
+import type { Config } from '@react-router/dev/config';
+import { glob } from 'node:fs/promises';
+import { createGetUrl, getSlugs } from 'fumadocs-core/source';
+
+const getUrl = createGetUrl('/docs');
+
+export default {
+  ssr: true,
+  async prerender({ getStaticPaths }) {
+    const paths: string[] = [];
+    const excluded: string[] = ['/api/search'];
+
+    for (const path of getStaticPaths()) {
+      if (!excluded.includes(path)) paths.push(path);
+    }
+
+    for await (const entry of glob('**/*.mdx', { cwd: 'content/docs' })) {
+      paths.push(getUrl(getSlugs(entry)));
+    }
+
+    return paths;
+  },
+} satisfies Config;