Close #2378 Add role tags (#2858)

* Room Roles

* Replace arunoda:streams by rocketchat:streamer

* Getting user roles

* Add stream notifications for adding/removing user and room roles

* Fix event broadcast

* Update version of rocketchat:streamer to 0.2.0

* Call subscribe after adding user to role

* Update rocketchat:streamer to version 0.3.0

* Notify broadcast

* Notify and broadcast as default

* Update rocketchat:streamer to version 0.3.1

* Update rocketchat:streamer to 0.3.2

* Improve broadcast auth

* Fix LiveChat Streamer