added function for explicitly requesting permissions for location provider. added notification observers for request permission and enable location provider.
added function for explicitly requesting permissions for location provider. added notification observers for request permission and enable location provider.

senseobservationsystems/sense-ios-library,senseobservationsystems/sense-ios-library,senseobservationsystems/sense-ios-library,senseobservationsystems/sense-ios-library,senseobservationsystems/sense-ios-library