[Feature Request] [Table] as a developer it would make life easier to have an expandAll functionality available for the table

[Licen-it]

Detailed description

Describe in detail the issue you're having.

The design i'm working on requires to have a functionality for the user to expand and collapse all expandable rows in a table. But unfortunately this function is not supported by carbon table, so i created a custom button in the table toolbar and i'm programmatically expanding rows one by one (to avoid messing up with the internal flow of events). This is not ideal and it would be great to have it supported natively like the select all. But if not possible, at least a functionality in the table model that is performing the expand/collapse all.

Edit: I just noticed that carbon react has this functionality already natively into the table header (same as select all).

Is this a feature request (new component, new icon), a bug, or a general issue?

Feature request

Is this issue related to a specific component?

TableComponent

What version of the Carbon Design System are you using?

latest

What offering/product do you work on? Any pressing ship or release dates we should be aware of?

Zelta