Onboarding experience with Podman

[slemeur]

Description

When a user downloaded and uses Podman for the first time, the user will not have any machine configured with podman.
The tools should provide the ability for end-users to quickly get a podman-machine up and running so that the end-user can start using containers.

Acceptance criteria

• If podman-machine is not started, then the user has the ability to start the podman-machine
• If podman does not have a machine initialized, the system tray allows the user to create and start a podman-machine
• If the user has multiple podman machines, the user has the ability to switch to a different machine. It will stop one of the machine and start the selected one

[benoitf]

fixed by #244