Create deployment packages that include dependencies

[edujanicas]

Is your feature request related to a problem? Please describe.
Currently, the function being deployed only supports the standard library. Support for extra libraries requires separate Lambda Layers to be deployed.

Describe the solution you'd like
Include all .requirements.txt dependencies in the .zip deployment package generated by the Lambda module.
https://docs.aws.amazon.com/lambda/latest/dg/python-package.html#python-package-create-dependencies

Describe alternatives you've considered
Deploying the function as a container image. Although eventually this might be useful to support additional providers, I believe at the moment it is an overkill.