Enable deployment of Python libraries

[carlschroedl]

Python Lambda environments have boto3 installed, but not much else. Eventually we will want to use other libraries. Find a way to automate the deployment of these libraries.

Resources:

https://dev.to/razcodes/how-to-create-a-lambda-using-python-with-dependencies-4846
https://docs.aws.amazon.com/cdk/api/latest/docs/aws-lambda-python-readme.html
https://stackoverflow.com/questions/58855739/how-to-install-external-modules-in-a-python-lambda-function-created-by-aws-cdk
https://github.com/kjpgit/techdemo/tree/master/cdk_python_lambda
aws-samples/aws-cdk-examples#130
https://gitlab.com/josef.stach/aws-cdk-lambda-asset/