Add contact/location model and serializer related to user

[glind]

Feature Request

A generic contact or location information model is needed as a related manytomany model to the user.

Proposal

A user management system can and should include some amount of location and contact information for a user beyond email. The core should a have a way for users to enter multiple contact or location information in the core without a secondary service lookup if needed. Ideally this would include typical address fields, a lat/long location and multiple phone, email and social media accounts.

Bug report

Enhancement

Current behavior

little to no contact data is allowed in the core beyond email

Expected behavior

An option for relating a set of multiple contacts and locations to a user.

Enviroment

Buildly version : x.y.z
Logs: ``