add control over SDK logs (OVRManager etc)

OVRManger and other components write a lot of debug logs that can get in the way of debugging other features. Would love to have to option to disable them completely or even on a more granular level.

Example: starting the app creates ~20 logs, and the constant focus and tracking events make developing frustrating at times, especially if you're putting on your headset often or using hand tracking. Not mentioning trying to get device logs.