Show "assigned to channels" box in admin for Collections, Facets and Promotions

[johannabertils]

Is your feature request related to a problem? Please describe.
I noticed that in the Vendure Admin UI, the "Assign Channels" infobox is currently available on the product detail page for products. However, this feature is missing for other entities, such as Collections, Facets and Promotions. This limitation makes it difficult to see which channels these entities are assigned to.

Describe the solution you'd like
The "Assigned Channels" infobox should be added to the detail pages for Collections, Facets and Promotions, allowing administrators to view and manage the channel assignments for these entities easily. This would provide a consistent way to see the assigned channels across different types of entities in the Admin UI.

Describe alternatives you've considered
Currently, administrators must manually track channel assignments for Collection, Facets and Promotions by checking each channel individually. This workaround is not efficient and may lead to errors.

[timcv]

Hi @michaelbromley,

I hope you’re doing well!

I was wondering if this is something currently on your roadmap or being considered?

Best regards,
Tim