Added router priority to webui's list and detail page

pkg/muxer/http/mux.go

@@ -46,6 +46,12 @@ func (m *Muxer) ServeHTTP(rw http.ResponseWriter, req *http.Request) {
 	http.NotFoundHandler().ServeHTTP(rw, req)
 }
 
+// GetRulePriority computes the priority for a given rule.
+// The priority is calculated using the length of rule.
+func GetRulePriority(rule string) int {
+	return len(rule)
+}
+
 // AddRoute add a new route to the router.
 func (m *Muxer) AddRoute(rule string, priority int, handler http.Handler) error {
 	parse, err := m.parser.Parse(rule)
@@ -64,10 +70,6 @@ func (m *Muxer) AddRoute(rule string, priority int, handler http.Handler) error
 		return fmt.Errorf("error while adding rule %s: %w", rule, err)
 	}
 
-	if priority == 0 {
-		priority = len(rule)
-	}
-
 	m.routes = append(m.routes, &route{
 		handler:  handler,
 		matchers: matchers,