Added PopularLinks controller

• Added:
- PopularLinks controller to fetch popular links, most recent 2 gabs from `@gab`

• Todo:
- Clean up code, store results in redis for time
- Add top video/links

config/routes.rb

@@ -337,6 +337,7 @@ Rails.application.routes.draw do
 
       resources :gab_trends, only: [:index]
       resources :links, only: :show
+      resource :popular_links, only: :show
       resources :shop, only: [:index]
       resources :streaming, only: [:index]
       resources :custom_emojis, only: [:index]