Role management

[ChristianGreyy]

• Create role:
• Success:
• Fail:

[ChristianGreyy]

• Update role:
• Success:
• Fail

[ChristianGreyy]

• Get role by id

[ChristianGreyy]

• Get all roles

[ChristianGreyy]

• Pull request: https://github.com/ChristianGreyy/C_Office_API/pull/31