Leo Auth SDK

The `leo-auth` SDK provides authentication utilities primarily for the LeoPlatform ecosystem, facilitating secure interactions with platform services. Currently stable at version 4.0.5, with ongoing development and recent pre-releases like `4.0.7-awsv3` indicating a continuous, albeit not rapid, release cadence. Key differentiators include its tight integration with AWS services, notably upgrading to AWS SDK v3 in the 4.x series, which offers modernized client configurations and improved performance. The SDK also incorporates security enhancements such as moving off TLSv1, and features like context overrides and `cognitoIdentityId` proxy for AWS key callers, indicating a focus on robust, cloud-native authentication flows. It is built to support Node.js environments and interacts with common authentication patterns for cloud applications.