SystemExtensions macOS 11.3 to 12.0 API Differences

SystemExtensions.h
Added +[OSSystemExtensionRequest propertiesRequestForExtension:queue:]
Added OSSystemExtensionProperties.isEnabled
Added OSSystemExtensionProperties.isAwaitingUserApproval
Added OSSystemExtensionProperties.isUninstalling
Added -[OSSystemExtensionRequestDelegate request:foundProperties:]