Add role helper for user model

Signed-off-by: ahmadshah <ahmadshahhafizan@gmail.com>
Add resolve roles to array method

Signed-off-by: ahmadshah <ahmadshahhafizan@gmail.com>
Merge pull request #6 from ahmadshah/feature/user-model-helper

Add role helper for user model
Merge commit '851f38f41e11d0b8d7490002c9d9a77c190271cd'