Refractor route code.

src/routes/onboard/hello.rs

@@ -0,0 +1,7 @@
+use crate::util::result::Result;
+use rauth::auth::Session;
+
+#[get("/hello")]
+pub async fn req(session: Session) -> Result<String> {
+    Ok("try onboard user".to_string())
+}

src/routes/onboard/mod.rs

@@ -0,0 +1,9 @@
+use rocket::Route;
+
+mod hello;
+
+pub fn routes() -> Vec<Route> {
+    routes! [
+        hello::req
+    ]
+}