Select a Rust module for the process pilot

[qor-lb]

The selected pilot module for Rust is persistency (agreed with @johannes-esr and discussed in Architecture Community Weekly 2025-04-14)

Stakeholders:

• Feature/Module: @sbachmann-qorix
• Process: @PandaeDo
• Infrastructure (supporting): @dcalavrezo-qorix
• Testing (reviewing): @dneail1601