[Suggestion] Add the option to search for gifs when using "has:" in the search bar

Given Discord has a built in gif picker, it doesn't make sense to not have an option to search for gifs when typing "has:" in the search bar. You can search for links, images, embeds, videos, etc, but there's no specific option to search for gifs. It would be nice to have the ability to type has:gif and see all messages that contain gifs.