[Enhancement]: Remove new-action and upgrade generator from solutions.

[KyrieLii]

What problem does this feature solve?

Unlike other commands(eg. dev build inspect .. ), these two commands do not depend on build capabilities or even whether dependencies are installed. But it brings the overhead of dependent installation.

I think they can be run independently to reduce unnecessary dependencies on initialization.

Further, they can not be 'generators', but just simple cli tools to become more lightweight.

What does the proposed API look like?

New and upgrade commands work fine but are not installed on initialization.