Support ability to select a role as default from the UI

[mithmatt]

See mocks in #3057

[mithmatt]

cc: @harshach @Sachin-chaurasiya

[mithmatt]

All backend code changes required for this feature has been landed

Noteworthy APIs:

Get a list of default roles
GET /roles?default=true

Get role and check default field (boolean)

GET /roles/:roleId

{
    "data": [
        {
            "id": "8cab99aa-532e-4669-8371-e6aa585a719d",
            "name": "DataConsumer",
            "displayName": "Data Consumer",
            "description": "Users with Data Consumer role use different data assets for their day to day work.",
            "version": 0.2,
            "updatedAt": 1645393642364,
            "updatedBy": "admin",
            "href": "http://localhost:8585/api/v1/roles/8cab99aa-532e-4669-8371-e6aa585a719d",
            "default": true
        }
  ]
}

Update role to be set as default (it also removes default from other existing roles)

PATCH /roles/:roleId

[{"op":"replace","path":"/default","value":true}]

[mithmatt]

Copied priority and project labels from #2460

[mithmatt]

cc: @harshach