feat: QL Session Handler refactored to handle non-GraphQL requests

[kidunot89]

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What does this implement/fix? Explain your changes.

• Adds some additional features to QL Session Handler:

  • Adds Enable QL Session Handler on WC AJAX requests option
  • Adds Enable QL Session Handler on WP REST requests option
  • Adds support for WooCommerce Session cookies and reading the woocommerce-session header on non-GraphQL requests to the QL Session Handler.

• Adds the forgetSession mutation for remove end-user's session from the DB.

  mutation {
    forgetSession(input: {}) {
      session {
        id
        key
        value
      }
    }
  }

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?

• WooGraphQL Version: …
• WPGraphQL Version: …
• WordPress Version:
• WooCommerce Version: