State describes the lifecycle status of a Feature.
Values:
STATE_UNSPECIFIED (0):
State is unknown or not set.
ENABLING (1):
The Feature is being enabled, and the Feature
resource is being created. Once complete, the
corresponding Feature will be enabled in this
Hub.
ACTIVE (2):
The Feature is enabled in this Hub, and the
Feature resource is fully available.
DISABLING (3):
The Feature is being disabled in this Hub,
and the Feature resource is being deleted.
UPDATING (4):
The Feature resource is being updated.
SERVICE_UPDATING (5):
The Feature resource is being updated by the
Hub Service.