added default hook handler arg name and router search helper

tools/hook/hook.go

@@ -108,7 +108,7 @@ func (h *Hook[T]) Bind(handler *Handler[T]) string {
 // The registered handler is added with a default 0 priority and the id will be autogenerated.
 //
 // If you want to register a handler with custom priority or id use the [Hook.Bind] method.
-func (h *Hook[T]) BindFunc(fn func(T) error) string {
+func (h *Hook[T]) BindFunc(fn func(e T) error) string {
 	return h.Bind(&Handler[T]{Func: fn})
 }