Add an example in Rust
Add an example in Rust:
- two main CI jobs, one for unit tests, one for end-to-end tests
- end-to-end tests use a GitLab Service
- image used in end-to-end tests is multi-stage: the first stage is an official Rust image based on Bookworm, the second stage is based on a Bookworm image hosted in our registry
@dduvall assigning you as reviewer since you expressed interest in the Rust build. Please feel free to ignore :)
@tburmeister FYI