Adding a shell option

[remyleone]

Description

It would be interesting to have a shell feature such as one that is similar to aws-shell or other interactive REPL.

By doing so I should be able to do:

scw --shell

> instance server list
> instance server get 11111111-1111-1111-1111-111111111111

How this functionality would be exposed

References

Version

Version 2.3.0
BuildDate unknown
GoVersion go1.16
GitBranch unknown
GitCommit unknown
GoArch amd64
GoOS darwin