Add agent shell

[LeonRomo]

This is a mere skeleton of the agent command

[LeonRomo]

Authentication issue here. seems like its coming from OnTask. here are the possible issues that I formulated:

1. Not sure if the endpoint does not require session authentication instead of token authentication while I am providing a bearer token, the server may expect a session-based login, especially if it's a local development server with Django's default settings.
2. OnTask expects the token to be used with the Bearer schema. Although this is a common standard, some APIs may use a different method.
3. The token has the right permissions to access the /table/3/pmerge/ endpoint. The token might be valid but might not have the scope required for the requested operation.

INFO:root:Authenticated with Canvas successfully!
Starting to fetch data for course 396, quiz 391
Finished fetching data.
ERROR:root:Failed to merge OnTask table: 401, {"detail":"Authentication credentials were not provided."}
ERROR:root:Failed to update the OnTask table with data from Canvas.
INFO:root:Request to http://127.0.0.1:8000/table/3/merge with headers {'accept': 'application/json', 'Authorization': 'Bearer 96ceb3b04c66be6b1ba60aca9e7ac09fcc153509'} returned 401
ERROR:root:Error fetching OnTask data: 401, Response: {"detail":"Authentication credentials were not provided."}
ERROR:root:Error fetching OnTask data: 401, {"detail":"Authentication credentials were not provided."}
INFO:root:Data has changed. Proceeding with OnTask update.
ERROR:root:Failed to merge OnTask table: 401, {"detail":"Authentication credentials were not provided."}
ERROR:root:OnTask table update failed.
Agent operation completed.