enable
Enables the auto brightness functionality
The controller, upon Enabling, will:
Enables the Ambient sensor
Calls the provider with the ambient sensor lux values
Receives the provider calculated brightness
Set the glasses brightness to the updated value
When the controller is disabled, it disables the ambient sensor enable state
Enable is possible only if the IEvsAutoBrightnessProvider was set via setProvider
The Auto brightness controller is automatically disabled when the IEvsDisplayService.setBrightness api is called
Return
true upon success, false otherwise