The current `UpdateIssueBoardOptions` and `IssueBoard` structs do not support hiding the backlog or closed lists on an issue board. According to the [GitLab API documentation](https://docs.gitlab.com/api/boards/#update-an-issue-board), `hide_backlog_list` and `hide_closed_list` are valid boolean attributes for updating a board. ## Expected Behavior Developers should be able to pass `HideBacklogList` and `HideClosedList` as pointers to booleans when using the `UpdateIssueBoard` method, and the returned `IssueBoard` struct should accurately reflect these states. ## Current Behavior The fields are completely missing from `UpdateIssueBoardOptions` and the base `IssueBoard` model, making it impossible to manage these board settings via the Go SDK. ## Possible Solution 1. Add `HideBacklogList` and `HideClosedList` to `UpdateIssueBoardOptions` as `*bool` with `json` and `url` tags. 2. Add `HideBacklogList` and `HideClosedList` to the `IssueBoard` struct as `bool` with `json` tags. 3. Update relevant unit tests to assert the parsing of these new fields.