Add tab to embed livestreaming videos on channel

.meteor/packages

.meteor/versions

...tchat-channel-settings/server/methods/saveRoomSettings.js

packages/rocketchat-livestream/client/tabBar.js

...ges/rocketchat-livestream/client/views/liveStreamTab.html

packages/rocketchat-livestream/client/views/liveStreamTab.js

packages/rocketchat-livestream/package.js

...tchat-livestream/server/functions/saveStreamingOptions.js

packages/rocketchat-livestream/server/models/Rooms.js

server/publications/room.js

server/startup/roomPublishes.js