Rework AnsibleJob definition

[Akasurde]

Currently, Ansible Job definition is at its bare minimum. We need to come up with something which is a more structured way to handle Ansible Job definition - https://github.com/ansible/ansible-sdk/blob/60ef7e694567507c919d94159571f9234ff8bc3a/ansible_sdk/model/job_def.py#L8

• Rename AnsibleJobDef to more generic to reflect its use
• Populate Dataclass members to reflect ansible-runner counterpart e.g. we right now have only https://github.com/ansible/ansible-sdk/blob/60ef7e694567507c919d94159571f9234ff8bc3a/ansible_sdk/model/job_def.py#L9-L13
• Add documentation around the data model

[Akasurde]

resolved_by_pr https://github.com/ansible/ansible-sdk/pull/32