fix: Product Attribute naming conventions changed

[kidunot89]

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What does this implement/fix? Explain your changes.

Changes product attribute naming convention for pluralize to prefix with all see example below

{
  allPaColor {
    nodes {
      id
      databaseId
      name
    }
  }
  allPaSize {
    nodes {
      id
      databaseId
      name
    }
  }
}

Does this close any currently open issues?

Fixes #505

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

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Any other comments?

…

Where has this been tested?

• WooGraphQL Version: 0.10.4
• WPGraphQL Version: 1.6.12
• WordPress Version: 5.9
• WooCommerce Version: 5.6.0