[Feature Request] `az artifacts universal` should support preemptively installing artifacttool

[zecheng01]

Related command

az artifacts universal

Is your feature request related to a problem? Please describe.

We have a CLI tool that spawns multiple processes to download universal artifacts. Currently, the artifacttool is only lazily installed before download or publish. This makes runtime behavior and performance unpredictable.

Describe the solution you'd like

Provide a dedicated CLI command that allows preemptively installing artifacttool or any other dependencies of universal artifacts.