feat: Added setPlaybackRate and tracks#63

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plauzul wants to merge 3 commits intojellyfin-archive:masterfrom plauzul:master

+113-21

Commits on May 18, 2020

feat: Added setPlaybackRate and tracks
plauzul
committed

Commits on May 20, 2020

fix(setMediaPlayBackRate): Receiving as a string now
plauzul
committed

Commits on May 22, 2020

feat: Added setPlaybackRate and tracks for IOS
plauzul
committed