Request new module: knative-serving

[triceam]

(Click Preview to navigate to guides) Please read the guides on how to create a module for the catalog:

• Guide for a GitOps Module
• Guide for a Terraform Module

Related user story
Related to #137
Part of epic #119

Type of module
gitops

If requesting a terraform module, what is the target cloud platform?
n/a

What is the purpose of the module?
Create a Knative Serving instance via gitops

What is the category of the module?
software

[github-actions]

Created repo - https://github.com/cloud-native-toolkit/terraform-gitops-knative-serving