Change QueueBinding from Tuple to struct

src/lavinmq/http/controller/queues.cr

@@ -134,7 +134,9 @@ module LavinMQ
           with_vhost(context, params) do |vhost|
             refuse_unless_management(context, user(context), vhost)
             queue = queue(context, params, vhost)
-            itr = queue.bindings.map { |exchange, args| BindingDetails.new(exchange.name, vhost, args, queue) }
+            itr = queue.bindings.map do |binding|
+              BindingDetails.new(binding.exchange.name, vhost, binding.binding_key, queue)
+            end
             default_binding = BindingDetails.new("", queue.vhost.name, BindingKey.new(queue.name, nil), queue)
             page(context, {default_binding}.each.chain(itr))
           end

src/lavinmq/vhost.cr

@@ -361,13 +361,13 @@ module LavinMQ
       end
     end
 
-    alias QueueBinding = Tuple(BindingKey, Exchange)
+    record QueueBinding, binding_key : BindingKey, exchange : Exchange
 
     def queue_bindings(queue : Queue)
       iterators = @exchanges.each_value.map do |ex|
         ex.queue_bindings.each.select do |(_binding_args, destinations)|
           destinations.includes?(queue)
-        end.map { |(binding_args, _destinations)| {ex, binding_args} }
+        end.map { |(binding_key, _destinations)| QueueBinding.new(binding_key, ex) }
       end
       Iterator(QueueBinding).chain(iterators)
     end