Cadence and speed sensor support

[emalafeew]

We've identified a couple issues that should be fixed tomorrow for cadence/speed users:

1. If you have both cadence and speed sensors hooked to your bike, as Zwift allows, only one of those will be registered as your VZfit sensor.  From then on, each time you rerun our apps you'll have a 50% chance of connecting to the other one, and getting a "contact support" message when it asks you to register.  We're planning to fix tomorrow by only allowing our apps to connect to the sensor you registered.

2. The Oculus controller recenter method (home button for 2 sec) works on Quest but currently not Go, because our app doesn't get a callback from the Oculus SDK like we'd need.  But I'll find a way to detect it another way so the Go home button works.  Until then the proper way to recenter in VZfit apps is to look down and press the RECENTER button.

These are both fixed in today's releases.

To fix (1) we now only connect to the last sensor you played with.  If you want to play with a different sensor, you can press the A button to connect to any compatible device again.  Note you would need to contact support@virzoom.com to change which sensor is registered with your account.

We also added battery level detection to cadence/speed sensors, so they'll report low battery in our games HUD.