New table and endpoints for service contact lists.

- Table to store meta data for the emergency contact list for a service.
- Endpoint for fetching contact lists for service
- Endpoint for saving contact list for service.

The list will be stored in S3. The service will then be able to send emergency announcements to staff.

tests/app/dao/test_service_contact_list_dao.py

@@ -0,0 +1,10 @@
+from app.dao.service_contact_list_dao import dao_get_contact_lists
+from tests.app.db import create_service_contact_list
+
+
+def test_dao_get_contact_lists(notify_db_session):
+    contact_list = create_service_contact_list()
+    fetched_list = dao_get_contact_lists(contact_list.service_id)
+
+    assert len(fetched_list) == 1
+    assert fetched_list[0] == contact_list