Draft: Add bzlmod minimal support (continuation)

[agluszak]

trafficstars

Description

Continuing work done by @mateuszkuta256 in #1541. I managed to:

• merge recent changes regarding #1290
• migrate several more things to MODULE.bazel
• fix several tests which became broken

This is by no means complete, but maybe another person will help me and/or take over :)

Motivation

Resolve #1482