Clean up the creation of GraphQL clients in our frontend

[CharlieMcVicker]

• minimize calls to createClient
• clean up names and move all createClient calls to one file
• refactor(gql): auth exchange decides which gql endpoint to use

In light of issues Ellen has had and Naomi has reproduced, it was time to simplify all the code creating GraphQL clients in our codebase. Instead of swapping out clients based on if the user has a token, we now have a smarter AuthExchange that ensures we always include a token for authenticated users (and hit /graphql-edit) and that we do not include tokens for un-authenticated users and WordPress GraphQL requests.

I think there is probably still some refining and renaming to do on this, specifically the serverSideClients could be better named.

[netlify[bot]]

✅ Deploy Preview for dailp ready!

Name	Link
🔨 Latest commit	0db30433cc3006d749c974552bf0c24ef8780b38
🔍 Latest deploy log	https://app.netlify.com/sites/dailp/deploys/65b0169524b25b00080bad64
😎 Deploy Preview	https://deploy-preview-387--dailp.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.