Add documentation

docs/next.config.js

@@ -0,0 +1,16 @@
+const withNextra = require("nextra")({
+  theme: "nextra-theme-docs",
+  themeConfig: "./theme.config.jsx",
+});
+
+module.exports = withNextra(
+  {
+    output: "export",
+    images: {
+      unoptimized: true
+    }
+  }
+);
+
+// If you have other Next.js configurations, you can pass them as the parameter:
+// module.exports = withNextra({ /* other next.js config */ })