Sort runtime_logger output

[lawrencegripper]

Show the slowest tests first in the runtime output file

Reason: I'm using this to profile and fixup slow tests so having them at the top is super useful.

Checklist

• Feature branch is up-to-date with master (if not - rebase it).
• Added tests. (adapted one rather than added)
• Added an entry to the Changelog if the new
  code introduces user-observable changes.
• NA Update Readme.md when cli options are changed

[lawrencegripper]

Going to remove this one, as it's fairly vscode specific

[grosser]

better than before 👍

atm they are randomly sorted by when they finished
so runtime is a bit less crazy

the other thing I could imagine is ordering alphabetically
which help seeing diffs in runtime when committing a new runtime file
and avoids diff when runtime did not change (kinda unlikely)
also sorting by runtime could be easily done with an ad-hoc command if needed

since nobody really ever cared for this we might as well use runtime