As a product owner, I should be able to get all possible role types, so that I can assign one while creating a role

[arafaysaleem]

Summary

As a product owner, I should be able to get all possible role types, so that I can assign one while creating a role.

Acceptance Criteria

GIVEN an product owner is requesting all possible role types in the desktop app
WHEN the app hits the /roles/types endpoint with a valid GET request
THEN the app should receive a status 200
AND in the response, the following information should be returned:

• headers
• list of role types

Sample Request/Sample Response

headers: {
    error: 0,
    message: "..."
}
body: [
    {
        role_type: "app_user"
    },
    {
        role_type: "laborer"
    },
    ....
]

Resources

• Development URL: {Here goes a URL to the feature on development API}
• Production URL: {Here goes a URL to the feature on production API}

Dev Notes

{Some complementary notes if necessary}

Testing Notes

{notes for QA, with examples if applicable}