Create documentation that you cannot create podman machine on Linux, only view / delete.

[cdrage]

Is your enhancement related to a problem? Please describe

See discussion on: https://github.com/containers/podman-desktop/issues/5823

We should add documentation that explains that you cannot create a Linux machine through the GUI, only CLI. This is intentional in order to not get users to accidentally create a podman machine, as it's not "very supported".

Describe the solution you'd like

Documentation that to create a podman machine, it is NOT recommended, but can be detected / used.

Describe alternatives you've considered

No response

Additional context

No response

[afbjorklund]

• https://github.com/containers/podman-desktop/issues/6225

Installing podman engine is not "very supported", either (unless we are counting v3)