synced attributes

Number of APIs: 3

1. Create a synced attribute POST {{baseUrl}}/profile_types/:profile_type_id/synced_attributes

2. Delete synced attribute DELETE {{baseUrl}}/profile_types/:profile_type_id/synced_attributes/:ne_attribute_id

3. profile_types/ne_attributes synced status GET {{baseUrl}}/profile_types/:profile_type_id/ne_attributes