refactor: move app/util/* to app/lib/

app/lib/message_dequeuer.rb

@@ -0,0 +1,14 @@
+# frozen_string_literal: true
+
+module MessageDequeuer
+
+  class << self
+
+    def process(message, logger:)
+      processor = InitialProcessor.new(message, logger: logger)
+      processor.process
+    end
+
+  end
+
+end