Turn ocmlf into a Terraform module

[AlexisVLRT]

Description

Right now OCMLF has a tightly coupled CLI workflow and infrastructure deployment.
Let's uncouple these by making the Terraform part a standalone module available in the Terraform registry.
This repo will just contain the CLI workflow to generate the deployment config, and invoke the TF module.

This will allow the Terraform part of OCMLF to be seamlessly integrated with existing IAC projects.