<!-- Thank you for suggesting an idea to improve this client. * Please add a :+1: or comment on a similar existing feature request instead of opening a new one. * https://github.com/influxdata/influxdb-client-csharp/issues?utf8=%E2%9C%93&q=is%3Aissue+is%3Aopen+is%3Aclosed+sort%3Aupdated-desc+label%3A%22enhancement%22+ --> __Proposal:__ Add offset to CreateThresholdCheckAsync and CreateDeadmanCheckAsync for alerting __Current behavior:__ Unable to set offset time when using CreateThresholdCheckAsync and CreateDeadmanCheckAsync methods __Desired behavior:__ Pass in optional offset time with functions __Alternatives considered:__ Manually create alerts __Use case:__ Ease of development and cleaner solution