Non-functional codebase improvements

[Omrigan]

Problem description / Motivation

There are small-scale non-functional changes/tech-debt we occasionally want to make here and there, but they do not have enough priority to deserve a separate issue. Several example out of the top of my head:

• Use ptr[T](obj T) *T everywhere
• Don't panic, ever
• Errorgroups for flow control everywhere
• Outdated/unmaintained dependencies cleanup
• Rename VirtualMachine to VM in neonvm-controller

Not sure it is the best way to track that, but I realized I keep a bunch of those in the head and needed to dump them somewhere.

Feature idea(s) / DoD

This issue doesn't have a DoD.

Tasks

Beta Give feedback

1. Move sender threads to a taskgroup