Refactor app in to its own slice

slices/main/views/workouts/index.rb

@@ -0,0 +1,18 @@
+module Main
+  module Views
+    module Workouts
+      class Index< Main::View
+        include Deps["repos.workout_repo"]
+
+        expose :workouts_by_year do
+          workout_repo
+            .list
+            .group_by { |wo|
+              wo.published_at.year
+            }
+            .sort
+        end
+      end
+    end
+  end
+end