Document compile/epel bindep profiles

[shanemcd]

These new profiles were introduced when https://github.com/ansible/ansible-runner/pull/581 landed. We should explain how they work somewhere in the ansible-builder documentation.

[AlanCoding]

Copying from prior issue

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We have a proposal that we would document certain bindep profiles that, if included by a collection, would trigger certain behavior by ansible-builder. We have discussed:

• epel - if a collection had entries with this profile, then the epel repo would be enabled before installing those requirements
• compile - if a collection had entries with this profile, then it would indicate that it is needed to install other requirements (python ones specifically), but not required to be in the final build. Several are being dealt with at the https://github.com/ansible/awx-ee repo

This ~would be~ was a notable addition to the core feature set of ansible-builder, and needs to be documented.

[Akasurde]

resolved_by_pr https://github.com/ansible/ansible-builder/pull/595