#624: adds UserInfo type and service functions

[usrrname]

Changes

• adds UserInfo type in src/types
• Adds findUserInfoByUser(user: User) function to src/user/service.ts, which returns a UserInfo type.
• creates starter service functions to userService: findUserInfoById, recordToModel, updateUserInfo
• call updateUserInfo on user controller when PUT /user:id called
• Add fields to GET /user/:id endpoint.
• Add fields to json-schema for validation.
• Support new fields when doing PUT /user/:id

#624