Music volume with speed (non-premium) - 🎵🔉🔊

1. Automate Community
2. Transportation

Adapts the volume of the music with respect to the current speed (using GPS sats). Adjusts the volume proportionally between standstill and 40Km/h, from a min volume value (editabile) and 100%.

Sets the volume back to its original value and stops the flow once the notification is dismissed.

Ment to be used while driving the car: very useful when approaching intersections and while parking, when you need to concentrate.

***V1.1 BUGS FIXED***
- flow will now properly stop when notification is dismissed.
- using atomic variable storage instead of writing to a file on disk.
- rearranged flow structure to be more comprehensible.