new task: Add variants to shipping profile

[mattsodomsky]

Similar to this task: https://tasks.mechanic.dev/auto-associate-products-with-a-delivery-profile-by-product-tag

But, for variants. And, because variants don't have tags, we'll need to use some other attribute(s) to assign the the shipping profile.

Sku? metafield?

[tekhaus]

There are a lot of good candidates for the criteria to be used here. Perhaps we choose one and then other developers can adapt from there.

For example, a shipping profile could be set up for bulky/heavy items. So, in that scenario, the task could be configured to add ANY variants that are equal or greater than the shipping profile weight to that shipping profile.

There are some tasks in the library that support using almost any type of attribute on a product/variant (and one more coming soon), but it's possible that might be a bit overkill for this task.

[mattsodomsky]

Could we do a few and then let developers go from there?

metafield and sku? (weight is interesting as well but logic might be too different?)