Product Block Editor: Create product attributes block

[louwie17]

Description

This issue will cover the creation of the product attributes block as we had designed in the original implementation.
With a few small additional changes (these changes can be done within the component as we will be replacing the current implementation with the block editor soon):

• The add attribute modal contains a description below the title
• The By default, new attributes are filterable and visible on the product page. You can change these settings for each attribute separately later. notice shown at the top has been moved down.

Items shown in the designs that aren't part of this issue

• The entire right column in the add and edit modals (the preview)

Designs

AkVNGImLgSqCObTQ3idVn7-fi-1005_169648

Acceptance criteria

• Include a new Attributes section with the correct icon and description that contains the attributes field.
• Add attribute button should be present rendering a Modal to allow users to add attributes ( same as old design )
• Once attributes are added they can be edited, re-ordered, removed (same as the old design).

[joelclimbsthings]

So I'm currently uncertain how to handle the lack of dragging functionality here due to it being suppressed within blocks (same as images). For the Images block we're removing dragging functionality temporarily, but in this case that is the only method we have for reordering attributes.

Any thoughts on the above @louwie17 @mdperez86 @joshuatf @jarekmorawski ?

[louwie17]

So I'm currently uncertain how to handle the lack of dragging functionality here due to it being suppressed within blocks (same as images). For the Images block we're removing dragging functionality temporarily, but in this case that is the only method we have for reordering attributes.

@joelclimbsthings as part of this issue, I would create the attributes block with the drag and drop removed/disabled if that is easily done? We can do a follow up issue to support drag & drop.
In the mean time @jarekmorawski would it be worth adding arrows for changing the order? Adding drag & drop support would have to be pushed to the following cycle (most likely), as it will require us turning the attributes into individual blocks within the list.