Update residentadvisor connector
Update residentadvisor connector

Use `Connector.getTrackInfo` to get track metadata.

inverse/web-scrobbler,inverse/web-scrobbler,carpet-berlin/web-scrobbler,fakelbst/Chrome-Last.fm-Scrobbler,fakelbst/Chrome-Last.fm-Scrobbler,alexesprit/web-scrobbler,galeksandrp/web-scrobbler,galeksandrp/web-scrobbler,david-sabata/web-scrobbler,david-sabata/web-scrobbler,alexesprit/web-scrobbler,carpet-berlin/web-scrobbler