Add Github Action automation (at least build and publish container to Github registry)

[mcruzdev]

We need to add Github Action automation for from-monolith-to-k8s services:

• [x] #23
• [ ] Add ci (with Github Actions) for fmtok8s-c4p
• [x] #32
• [ ] Add ci (with Github Actions) for fmtok8s-email
• [ ] Add ci (with Github Actions) for fmtok8s-queue
• [ ] Add ci ( with Github Actions) for fmtok8s-tickets
• [ ] Add ci (with Github Actions) for fmtok8s-payment

By default Github Actions creates a package with private visibility. We need to change it to public.