Add endpoints to update working groups data

We will need more endpoints in order to properly manage the data once the data exists in a database. I followed general CRUD operation distinctions when defining the following endpoints.

HTTP Method	Endpoint
POST	/working_groups
PUT	/working_groups/{alias}
DELETE	/working_groups/{alias}
PUT	/working_groups/{alias}/resources
POST	/working_groups/{alias}/levels
PUT	/working_groups/{alias}/levels/{levelId}
DELETE	/working_groups/{alias}/levels/{levelId}
POST	/working_groups/{alias}/agreements
PUT	/working_groups/{alias}/agreements/{agreementId}
DELETE	/working_groups/{alias}/agreements/{agreementId}

When creating these endpoints, we should also be updating the OpenAPI spec.