feat: support ZVM

[SteveLauC]

Standards checklist:

• The PR title is descriptive.
• I have read CONTRIBUTING.md
• The code compiles (cargo build)
• The code passes rustfmt (cargo fmt)
• The code passes clippy (cargo clippy)
• The code passes tests (cargo test)
• Optional: I have tested the code myself

For new steps

• Optional: Topgrade skips this step where needed

• Optional: The --dry-run option works with this step

• Optional: The --yes option works with this step if it is supported by
  the underlying command

  cc @tristan-nsg, does zvm have a --yes option?

If you developed a feature or a bug fix for someone else and you do not have the
means to test it, please tag this person here.

[SteveLauC]

Gentle ping on @tristan-nsg again, could you please take a look at this?

[tristan-nsg]

This looks good for me!