Extract /watch route from main file

src/invidious/routing.cr

@@ -1,7 +1,7 @@
 module Invidious::Routing
   macro get(path, controller)
     get {{ path }} do |env|
-      controller_instance = {{ controller }}.new(config)
+      controller_instance = {{ controller }}.new(config, logger)
       controller_instance.handle(env)
     end
   end