add an example illistrating intigration with the router

packages/server/Cargo.toml

@@ -17,6 +17,7 @@ http-body = { version = "0.4.5", optional = true }
 axum = { version = "0.6.1", optional = true }
 tower-http = { version = "0.4.0", optional = true, features = ["fs"] }
 hyper = { version = "0.14.25", optional = true }
+axum-macros = "0.3.7"
 
 # salvo
 salvo = { version = "0.37.7", optional = true, features = ["serve-static"] }
@@ -29,6 +30,7 @@ log = "0.4.17"
 once_cell = "1.17.1"
 thiserror = "1.0.40"
 tokio = { version = "1.27.0", features = ["full"], optional = true }
+object-pool = "0.5.4"
 
 [features]
 default = []