Play behaviour

[manuelmayer-dev]

Users should have the possibility to choose between multiple play behaviours:

• "Play/Stop" -> On the first tap of the button, the audio starts playing, on the second tap it stops.
• "Play/Overlap" -> The audio overlaps on multiple taps
• "Play/Play again" -> On the first tap of the button, the audio starts playing, on the second tap it starts from the beginning.
• "Loop/Stop" -> On the first tap of the button, the audio starts playing and automatically loops, on the second tap it stops.

[PhoenixWyllow]

Notes:

• All actions except "Overlap" will stop all other audio from the plugin (this is necessary otherwise they all overlap)
• Play/play again functionality is essentially the action implemented since the first version

Changes will be merged soon. New labels are present - I have removed some because redundant.