Make API call to resolver to enable profile pictures to be uploaded to Firebase

[neelismail01]

Summary and Background

API calls to appropriate GraphQL queries/mutations need to be made in order to support the creation, retrieval, and deletion of profile photos from the client side. The following mockup done in #360 should work:

Technical

• The buttons for uploading profile photos are in frontend/src/components/pages/NewAccountPage.tsx, so the API calls will need to be made there
• The GraphQL APIs are defined in backend/graphql/resolvers/userResolvers.ts. Take a look at the queries/mutations related to profile photos to view the required parameters that need to be passed in the request