Add emergency address in the response from a batch create for phone locations

The POST /v2/phone/batch_locations does not return the emergency address created with the location creation.

This is not an error though it does create difficulty when API users are attempting to map this data to their own sources. It requires additional requests to get the emergency address id when it is already associated at the time of creation. Including the emergency address identifier created would help improve performance on our side and reduce data errors. Adding the user provided identifier would also help reduce lookups on the db side.