feat: support customizing timeout for specific route (#1203)

* feat: support customizing timeout for specific route

* test: add more tests

rest/types.go

@@ -1,6 +1,9 @@
 package rest
 
-import "net/http"
+import (
+	"net/http"
+	"time"
+)
 
 type (
 	// Middleware defines the middleware method.
@@ -28,6 +31,7 @@ type (
 	}
 
 	featuredRoutes struct {
+		timeout   time.Duration
 		priority  bool
 		jwt       jwtSetting
 		signature signatureSetting