Changes
* PR https://github.com/DanSheps/netbox-config-backup/pull/101
* Switch to pyproject.toml
* Upgrade Backup model to PrimaryModel
* Add GraphQL support
* Add new config_status variable to check if IOS devices are saved
* Refine build process DanSheps (https://github.com/DanSheps/netbox-config-backup/pull/101)