* perf: ensure we do not provide callback to native if no callback provided from app
* chore: rework bufferConfig to make it more generic and reduce ReactExoplayerView code size
* chore: improve issue template
* fix(ts): onPlaybackRateChangeData was not correctly typed
* fix: ensure tracks are well displayed in the sample
* fix(ios): ensure duration is correct when starting a live playback
* chore: move ticket version to a free text field instead of dropDown
