Fixed file directory path for dtos

reorg files by renaming directories to correspond with `dto` and `entity`

Channel model should be renamed to entity

This should be the correct way to create a one-to-many relationship between the same type

Updated schema for Message and Channel

cleaning up dtos

shouldn't confuse entities with dtos

it should have objecttype annotation

redefined new user model to new user entity. It should not be an objecttype but a DTO

redefined user model to user entity

Updated messages and newMessage to be entities.

imported TypeOrmModules to modules

Should use es6 syntax

Added typeORM module for typechecking entities against our postgres db

scaffolding some user-channel interactions