WIP: Base implementation for scheduled_at filter

[bruno-oliveira]

I'm sure I am missing something here and I could use a nice code review/pair programming session on this one!
I'm new to ruby and to rails as well, decided to contribute in the hopes of learning something new and because David and Jason are a great source of inspiration, so, instead of consuming only videos, podcasts and blogs, I've decided to jump into the deep end and contribute some code!

[bruno-oliveira]

As stated in the description above, I am sure some key things are missing, like how to exactly (and where) to add the filter logic to ensure both queue implementations know of it as expected and maybe also adding some tests....

[rosa]

Hey @bruno-oliveira, thanks for trying! A couple of comments:

• Resque by itself doesn't support scheduled jobs, it needs resque-scheduler. There's a separate issue for this: Add support for resque-scheduler #31. Because of this, I think you should remove all the support for this filter from the Resque adapter extension, as there's no point on supporting that filter without supporting scheduled jobs.
• The diff on ActiveJob::QueueAdapters::SolidQueueExt is very big. I'd expect it to be very small, with just support for this new filter, why did you change the visibility of so many methods?