* ansible-test - Improve help for unsupported cwd.
* The `--help` option is now available when an unsupported cwd is in use.
* The `--help` output now shows the same instructions about cwd as would be shown in error messages if the cwd is unsupported.
* Add `--version` support to show the ansible-core version.
* The explanation about cwd usage has been improved to explain more clearly what is required.
Resolves https://github.com/ansible/ansible/issues/64523
Resolves https://github.com/ansible/ansible/issues/67551