Feature request: make the versions optional in the alias command

[wkillerud]

We got a Slack message about the alias command. Apparently it changed behavior in v3 (possibly #572) in a way that broke their workflow.

Is it not possible anymore to just alias an Eik package without knowing the semver major?
If so that's a pretty big step back for being able to quickly alias packages that should always point to the latest version.

I have at least a few places where we were doing this in Github Actions - so now I would need to detect what semver-major the project uses and set that.

Their workflow:

eik login -k $EIK_TOKEN
eik publish
eik pkg-alias

So the suggested change is that alias commands update the highest semver alias with the latest version when not given any arguments.