Implement commercial calendars: booking_open, specialists, expire without type downgrade.

Refs EventHub/EventHubBack#54

test/api/users/user_bookings_tests.erl

@@ -31,7 +31,11 @@ test() ->
   ParticipantToken = api_test_runner:register_and_login(ParticipantEmail, <<"pass">>),
 
   % Создаём календарь и событие
-  CalId = api_test_runner:create_calendar(OwnerToken, #{title => <<"BookingTest">>}),
+  CalId = api_test_runner:create_calendar(OwnerToken, #{
+    title => <<"BookingTest">>,
+    type => <<"commercial">>,
+    confirmation => <<"manual">>
+  }),
   #{<<"id">> := EventId} = api_test_runner:client_post(
     <<"/v1/calendars/", CalId/binary, "/events">>, OwnerToken,
     #{title      => <<"Event to book">>,