Create user stuff

[pedrovian4]

[ ] User creation
[ ] User Auth
[ ] User Hierarchy (Host and Rest)
[ ] Manage Session auth information

[lucas-pace]

User hierarchy isn't a stuff of planning poker?
Same user can be host in one game and in another no
I suggest put user_id in planning_poker table or even a "is_host" in planning_poker_users

[pedrovian4]

Since we are working with game sessions, we could have like user_sessions, and sessions table