After further discovery, The L4-L7 integration in ACI functions much like many 'API type' GUI interface for firewall management. A familiar example for everyone would be ASDM in ASA management. However, the ACI integration is not as effective as using ASDM, which lacks even some control only available via CLI.
Short story, the package does not exist because it is unnecessary and would be less effective than the existing Cloud Management or API Dashboard that is already available.
Hopefully this saves someone else the time it took to understand the relationship. Thanks to all with their insights!
Don