feat/user-management

# User Management

## ELement

### Login function

- [ ] Compare if the name and password match
- [ ] if no -> put a delay of 1.5 sec

### Upload function

- [ ] Upload data of the user if needed

## Todo

- [ ] Save First name, last name and email adress
- [ ] Save + encode user passwords
- [ ] Create a login function
- [ ] Create an upload function