feat: ability to exclude global roles from GET-roles API

[shadinaif]

feat: ability to exclude global roles from GET-roles API

• Removing exclusion filter options: exclude_tenant_roles and exclude_course_roles
• Replacing them with one exclusion filter option excluded_role_types that accepts any combination of global, tenant, and course

show only users having global roles ((do not show users having tenant-wise or course-specific roles, unless another role exists))

GET /api/fx/roles/v1/user_roles/?excluded_role_types=tenant,course

do not show users having global roles, unless another role exists

GET /api/fx/roles/v1/user_roles/?excluded_role_types=global

do not show users having course-specific roles, unless another role exists

GET /api/fx/roles/v1/user_roles/?excluded_role_types=course

invalid types are ignored. The following will act like the first example

GET /api/fx/roles/v1/user_roles/?excluded_role_types=atmoic,global

Related Tasks:

• this is a breaking change, but filters for roles are not implemented yet in the front-end. Therefore, we're good 👍🏼
• update the docs!