feat: Convert repo to ansible collection

Convert this repo to be an ansible collection.

closes #9 (closed)

Tasks

• CI updated for collection
• repo moved to ansible/collections group
• readme updated
• deploys to galaxy
• removed from ansible roles repo
• awx-ee updated
• [ ] #9 (closed) closed in commit
• docs updated
• rename github repo
• Add Playbooks

@jasonpage.tas, this links in with !35 (merged) and will provide a single command to install a cluster.