Move all sensor related bussiness logic to SensorController.

Also, sensors can be only registered once during VD creation
and destroyed only together with VD. Make this more explicit
in the code. Note that this doesn't change the the existing API
behavior.

Bug: 278900649
Test: atest SensorControllerTest
Test: atest CtsVirtualDevicesTestCases

Change-Id: Ib46780f6471aeb90ee5900ad0635b0b9df602d1e