Moving CernAuthorizationService class into cern-specific directory.

src/models/cern-specific/group-manager.ts

src/models/group.ts

...pl/channel-recommendations/get-channel-recommendations.ts

src/services/impl/channels/add-group-to-channel.ts

src/services/impl/channels/add-member-to-channel.ts

src/services/impl/channels/edit-channel-by-id.ts

src/services/impl/channels/find-all-channels.ts

src/services/impl/channels/find-channel-by-id.ts

src/services/impl/channels/get-channel-groups.ts

src/services/impl/channels/get-channel-members.ts

src/services/impl/channels/get-channel-stats.ts

src/services/impl/channels/remove-group-from-channel.ts

src/services/impl/channels/remove-user-from-channel.ts

src/services/impl/channels/set-channel-owner.ts

src/services/impl/channels/subscribe-to-channel.ts

src/services/impl/channels/unsubscribe-from-channel.ts

src/services/impl/notifications/delete-notification-by-id.ts

src/services/impl/notifications/find-all-notifications.ts

src/services/impl/notifications/get-by-id.ts

src/services/impl/notifications/send-notification.ts