Feature Request: Allow groups to be nested as sub-sections

[eshanrnh]

In an ultimate site with multiple products, it would be helpful if a group of related products or integrations could be added as a section within a product, rather than only existing as a separate group at the same level.

For Example: Commerce Products group within the Commerce section

This would make it easier to:

• Organize related products and integrations under a clear product context
• Scale the structure as new products or integrations are added
• Improve navigational clarity and reduce ambiguity for users

For example, a product could contain:

• Core documentation (including versions)
• One or more grouped sub-products or integrations

This structure would better support growing product ecosystems and keep related content clearly grouped.