docs: add simple router book

docs/router/src/SUMMARY.md

@@ -1,3 +1,11 @@
 # Summary
 
-- [Chapter 1](./chapter_1.md)
+- [Introduction](./README.md)
+
+- [Guide](./guide/index.md)
+    - [Getting Started](./guide/getting-started.md)
+    - [Creating Our First Route](./guide/first-route.md)
+    - [Building a Nest](./guide/building-a-nest.md)
+    - [Redirection Perfection](./guide/redirection-perfection.md)
+- [Reference](./reference/index.md)
+    - [X]()