Replaces WP_Query to WC_Product_Query in Product connections

[kidunot89]

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What does this implement/fix? Explain your changes.

Uses WC_Product_Query instead of WP_Query. Adds support for custom Product data stores, however pagination functionality will to still have to filtered in order to work properly.

• WP_Query => WC_Product_Query

Implements ProductTypesEnum for resolve product type. values are filterable through the graphql_product_types_enum hook.

• ProductTypesEnum type
• Products connections where args type, typeIn, typeNotIn updated
• Product type field type updated
• ProductVariation type field type updated

Does this close any currently open issues?

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Any relevant logs, error output, GraphiQL screenshots, etc?

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Any other comments?

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Where has this been tested?

Operating System: …

WordPress Version: …