aws-cognito-apigateway-lambda: leverage aws-lambda-nodejs

hi, these constructs are very helpful!

however, i am running into issues with my project because i cannot find an easy way to bundle my nodejs monorepo project. the lambda function that gets deployed is missing all the dependencies.
it would be great if you could offer an option to leverage `aws-cdk-lib/aws-lambda-nodejs`, which leverages `esbuild` and handles all the bundling. thanks.

The issue does not name specific files or tests; start by locating the aws-cognito-apigateway-lambda construct and its Lambda configuration. Review how the construct currently packages dependencies, then assess an option using aws-lambda-nodejs and esbuild. Done means deployed Lambda functions can bundle and include dependencies from a Node.js monorepo.

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