Create EmployeeEntity

[fredrikmohlen]

Create Entity, Repository, Service and DTO classes.

OBS! Name 'Employee' changed to 'user' which is more common and also involve visitor, when it will be added later.

Medarbetare Use English

• Id
• Roll
• Namn
• Email
• Lösenord? (crypt hashat?)
  ----> Task (Task will be added later, when the Task is created) <----

...
Spring Security requires to explicitly define a PasswordEncoder bean in a configuration class so it can be "injected" into UserService.
SecurityConfig.java class needed.