Add publish action

slices/admin/actions/posts/publish.rb

@@ -0,0 +1,16 @@
+module Admin
+  module Actions
+    module Posts
+      class Publish < Action
+
+        include Deps["repos.post_repo"]
+
+        def handle(req, res)
+          post_id = req.params[:id]
+
+          post_repo.publish(id: post_id)
+        end
+      end
+    end
+  end
+end