Add metadata to channel listings

[timuric]

From Discord discussion:

Sales channels,(marketplaces) are huge part of the ecommerce especially in the US. For my setup I would definitely need a url field of the listing linking directly to the sales channel listing. Also, different title and description requirements can apply to listings from different marketplaces. It would be very flexible to add a metafields to the ProductVariantChannelListing and ProductChannelListing entities

[saqibmehmood]

Hi @timuric
I want to work on this bug. Please let me know when you are available to discuss in details.

[aniav]

Hey @saqibmehmood nobody is working on this ticket currently, you are free to pick it up 🙌

[SarthakNikhal]

@aniav @saqibmehmood Is this issue resolved? I can help if not

[mayixiaobai248]

Hello, I want to work on this issue.