greenlight Added a stream volume control slider to the Gamebar UI

volume

Nothing fancy, nothing pretty, but it works - styling can easily be adjusted to fit the aesthetic of the app as one sees fit. Client side volume control is done via adjusting the volume attribute on the audio tag created by xbox-xcloud-player.

Tested on macOS, local streaming to xbox on same wifi. Works great, huge QoL upgrade for me as previously when streaming while also watching youtube/listening to music I would otherwise have to go into every individual game's settings to change the volume, if even possible.

Appreciate the hard work put into this program! Hope I could help!