Add stub of alerts route

spec/requests/api/v1/parks/alerts_spec.rb

@@ -0,0 +1,7 @@
+require 'rails_helper'
+
+RSpec.describe "Api::V1::Parks::Alerts", type: :request do
+  describe "GET /parks/:code/alerts" do
+    pending "add some examples (or delete) #{__FILE__}"
+  end
+end