Feature: add support for a read hook

[champagnetony]

Adding support for a new plugin with new hooks to handle GrapQL

Description

The Service Client oAuth expects 401 as the status code, but GraphQL returns 200 status code and adds a message in the errors field of the body. This is per the GraphQL specification. As a result, the Service Client is not sending retry requests to refresh the token. The new code handles the new oAuthGraphQL plugin.

Motivation and Context

If fixes issues with graphql endpoints in the Expedia Group network.

How Has This Been Tested?

The code has been unit tested.

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.
• I have updated the typings as necessary.

[tuckbick]

Looks good, just one thing.

[tuckbick]

Looks really good! Just a couple suggested changes.

[tuckbick]

This looks good! Please amend the CHANGELOG file, and I think we'll be good to go. 👍