Integrate graphQL for auth component

[padmajabhol]

Pull Request Template

This PR calls the graphql backend for login and signup components.

Please include a summary of the change. Please also include relevant motivation and context. List any dependencies that are required for this change.

Fixes # (issue)

Type of change

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• Breaking change (fix or feature that would cause existing functionality to not work as expected).

How Has This Been Tested?

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Checklist:

• My code follows the style guidelines of this project.
• I have performed a self-review of my own code.
• I have made corresponding changes to the documentation.
• I have added corresponding tests.
• Any dependent changes have been merged and published in downstream modules.