Dual-write for users and userWorkspaces.

[mabdullahabaid]

Summary:

• Replicated all the fields from users to userWorkspaces entity.
• Introduced some helper functions to map the fields from userEntity that we want to write to userWorkspaceEntity.
• Mapping all fields in every write so that if a user updates password, but nothing else, the entire user entity is mapped to user workspace table along with the updated password.