Added some structs for ANCS events
Added some structs for ANCS events

pi19404/ble-sdk-arduino,NordicSemiconductor/ble-sdk-arduino,Cheong2K/ble-sdk-arduino,Cheong2K/ble-sdk-arduino,pi19404/ble-sdk-arduino,NordicSemiconductor/ble-sdk-arduino,pi19404/ble-sdk-arduino,Cheong2K/ble-sdk-arduino,NordicSemiconductor/ble-sdk-arduino,NordicSemiconductor/ble-sdk-arduino,pi19404/ble-sdk-arduino,NordicSemiconductor/ble-sdk-arduino,Cheong2K/ble-sdk-arduino