Add UI prompts when autoplay is blocked for video/screenshare/listen only

bigbluebutton-html5/imports/api/audio/client/bridge/base.js

...uebutton-html5/imports/api/audio/client/bridge/kurento.js

...on-html5/imports/api/screenshare/client/bridge/kurento.js

...ml5/imports/ui/components/audio/audio-modal/component.jsx

...ml5/imports/ui/components/audio/audio-modal/container.jsx

...-html5/imports/ui/components/audio/autoplay/component.jsx

...on-html5/imports/ui/components/audio/autoplay/styles.scss

bigbluebutton-html5/imports/ui/components/audio/service.js

...mports/ui/components/media/autoplay-overlay/component.jsx

.../imports/ui/components/media/autoplay-overlay/styles.scss

...luebutton-html5/imports/ui/components/media/component.jsx

...ton-html5/imports/ui/components/screenshare/component.jsx

...rts/ui/components/video-provider/video-list/component.jsx

...s/video-provider/video-list/video-list-item/component.jsx

...uebutton-html5/imports/ui/services/audio-manager/index.js

bigbluebutton-html5/private/locales/en.json

...luebutton-html5/public/compatibility/kurento-extension.js