container: add getPlaybackType method
container: add getPlaybackType method

leandromoreira/clappr,Metrakit/clappr,clappr/clappr,flavioribeiro/clappr,jfairley/clappr,kelonye/clappr,MariadeAnton/clappr,tjenkinson/clappr,MariadeAnton/clappr,irongomme/clappr,burakkp/clappr,irongomme/clappr,burakkp/clappr,Pyrotoxin/clappr,dayvson/clappr,clappr/clappr,tarkanlar/clappr,Peer5/clappr,shakin/clappr,tjenkinson/clappr,tarkanlar/clappr,kelonye/clappr,MariadeAnton/clappr,leandromoreira/clappr,wxmfront/clappr,jfairley/clappr,burakkp/clappr,irongomme/clappr,kelonye/clappr,flavioribeiro/clappr,leandromoreira/clappr,jfairley/clappr,Pyrotoxin/clappr,Peer5/clappr,wxmfront/clappr,wxmfront/clappr,tjenkinson/clappr,shakin/clappr,shakin/clappr,tarkanlar/clappr,Pyrotoxin/clappr,clappr/clappr,dayvson/clappr,Peer5/clappr,flavioribeiro/clappr,dayvson/clappr,Metrakit/clappr,Metrakit/clappr