add basic API specs

spec/factories/submitters.rb

@@ -4,6 +4,8 @@ FactoryBot.define do
   factory :submitter do
     submission
     email { Faker::Internet.email }
+    name { Faker::Name.name }
+    phone { Faker::PhoneNumber.phone_number }
 
     before(:create) do |submitter, _|
       submitter.account_id = submitter.submission.account_id