Add the ability to create attribute options through [+ Add] from the comfort of product

Add the ability to create attribute options through [+ Add] from the comfort of product

When create a product with a unique attribute (# color) constantly have to go back in Options-> Attributes to create new types of color: "LG02 Light Green", "RS23 Red Sunset", etc. And then go back to the product to select these attributes.

Propose to add the ability to create attribute options through [+ Add] from the comfort of product, for convenience.

1. Tab "Attribute"

2. After pressing [+ Add]

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