Add current job ID and current cluster name to banyanconfig.toml

[calebwin]

Currently we have a set of configuration parameters which are stored in banyanconfig.toml, environment variables, or parameters to the configure function.

• [ ] Make configure also store and maintain cluster name and job ID
• [ ] Migrate all functions from using cluster_name/name as a parameter to simply calling configure
• [ ] Migrate all functions from using current_job_id to simply calling configure

This will improve the consistency across the API and make it super easy for a user to understand and specify what Banyan account, AWS account, cluster, and job are being used at any point.