Add necessary requirement for `PodmanRuntimeConfig`

[HorjuRares]

Description

Upon closer inspection, it seems that the PodmanRuntimeConfig is missing a proper swdd associated to it. This should include details about its structure.

Goals

A new requirement is sketched up and approved.

Final result

Summary

To be filled when the final solution is sketched.

Tasks

• Write the proper requirement
• Get it approved by the team