[ENG-415]Fix/login repeat

[a-cass]

Description

Please explain the changes you made here.

I have replaced the Client's token attribute with an auth class. This class intercepts requests, ensuring the appropriate headers are attached. When instantiated, it will look for a token file and use that. If this file doesnt exist, no auth will be available until the user logs in. When users excecute a query whilst no auth file is available and they have not logged in a FileNotFoundError is raised instructing them to login:

Additionally, the auth class will catch authentication errors due to expired access tokens and issue a refresh token request, updating the client's stored access token.

Checklist

• [x] Dependencies install correctly in a clean environment and code executes;
• [ ] Test coverage extended; created tests fail without the change (if possible);
• [x] All tests passing;
• [x] Commits follow a type convention (e.g. https://gist.github.com/brianclements/841ea7bffdb01346392c#type);
• [x] Extended the README, documentation and/or docstrings, if necessary;

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Name	Status	Preview	Comments	Updated (UTC)
feo-client	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Dec 6, 2023 3:31pm

[notion-workspace[bot]]

Logging in again doesn’t change client token.