NCP extension services functions

• NWDeRegisterNCPExtension(3nw)

• NWGetNCPExtensionInfo(3nw)

• NWGetNCPExtensionInfoByID(3nw)

• NWNCPSend(3nw)

• NWRegisterNCPExtension(3nw)

• NWRegisterNCPExtensionByID(3nw)

• NWScanNCPExtensions(3nw)

• NWSendNCPExtensionFraggedRequest(3nw)

• NWSendNCPExtensionRequest(3nw)