Add "products" to WARM_UP_PAGES logic

[Bodyanuk]

Problem

It's impossible to preload cache for specific products.
Marketing department usually uses specific products in commercial. So, it would be great to have already cached product pages.
Of course, this feature must have some limits.

Proposal

stage:
    post-deploy:
        WARM_UP_PAGES:
            - "products:store_code:sku1"
            - "products:*:sku1|sku2|sku3"
            - "products:store_code|store_code2:*"

1. Preload cache for product with SKU = sku1 and Store View code = store_code
2. Preload cache for product with SKU in (sku1, sku2, sku3) for all Store Views
3. Preload cache for all enabled products for multiple Store Views

I recommend add limits to "products::" pattern and show information in build log about it:

You reached N products urls limit

[shiftedreality]

Hello @Bodyanuk,

I've created an internal ticket https://magento2.atlassian.net/browse/MAGECLOUD-4444 to add this functionality.

Thanks for your submission!