Moves meta toggle JS logic to be globally accessible.
Adds product metas migrations.
Adds product metas models.
Adds metas relations to product and product option models.
Adds product metas services.
Adds meta support to the create product service.
Adds meta support to the create product option service.
Adds meta support to the product and product option validators.
Adds meta fields to product form.
Adds custom control-group-vertical classname for styling the new product meta fields.
Adds support for defining metas when creating a product via the control panel.
Adds meta fields to product option form.
Adds retrieval of product metas to the create product control panel page.
Adds support for attaching metas when creating a product option via the control panel.
Adds meta column to the control panel's product options list view.
Revert "Adds meta support to the create product service."

This reverts commit 852f5b60c0b74aa1638d76fd4461efc9deca425d.
Revert "Adds meta support to the product and product option validators."

This reverts commit a0f4577981bb19e982594041ad733a5a784aec85.
Revert "Adds meta fields to product form."

This reverts commit 10770e5371f23667c64732c56128f541fbbfd1e0.
Revert "Adds support for defining metas when creating a product via the control panel."

This reverts commit ae5b5020753f833b2637146af7d44ee477179078.
Revert "Adds retrieval of product metas to the create product control panel page."

This reverts commit 53f06d72dd8f242bf9b53a6adf3465f5efdc792d.