Welcome to Chowdown Showdown, a column aimed at getting your feedback on the best eats in Clayton and Richmond Heights. Each week, we will ask you to tell us your favorite place to get a cup of coffee or a burger or breakfast.  This week we're up bright and early. We want to know: Where is the best place in Clayton or Richmond Heights to get breakfast? You can let us know your favorite spot by commenting below. You will be able to submit your vote through 5 p.m. Tuesday.  From there, we will take the top three finalists and post them in an article first thing Wednesday morning. Then it will …