Add `nomad` provider

[livioribeiro]

Describe the provider Nomad is an orchestrator from Hashicorp, similar to Kubernetes but with simpler deployment and operation.

Does the provider provides the following APIs An instance is a generic term used to describe containers, pods, deployments, and more

API	Yes	No	I don't know
Start an instance	✅
Stop an instance	✅
Get info about an instance	✅
Listening for external events happening	✅

Does the provider has a Go API SDK? Yes https://pkg.go.dev/github.com/hashicorp/nomad/api

Does the provider can be started locally Yes