Hms-utils

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* 2024-08-30/dmichaels
* Initial checkin.
* Miscellaneous Python utilities.
- hms-aws-env: Manage SSO-based AWS credentials in ~/.aws/config.
- hms-aws-ecs: View AWS ECS info.
- hms-config: Manage local/dev config/secrets properties/value in ~/.config/hms/{config,secrets}.json.