feat: Business hours

Data models and APIs for business hours

ref: #234

spec/rails_helper.rb

@@ -65,6 +65,7 @@ RSpec.configure do |config|
   # config.filter_gems_from_backtrace("gem name")
   config.include SlackStubs
   config.include Devise::Test::IntegrationHelpers, type: :request
+  config.include ActiveSupport::Testing::TimeHelpers
 end
 
 Shoulda::Matchers.configure do |config|