Add option to select which CQRS command/query to generate

[tom-combet]

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

As a user, I want to be able to generate one CQRS command or query (Add, Edit, Delete or Get) so that I can complete an existing CRUD CQRS domain.

Describe the solution you'd like

Add an option in CRUD CQRS maker.

Usage: --command="command"
Possible values: "add", "edit", "delete" and "get"

Describe alternatives you've considered

N/A.

Additional context

Especially useful in PrestaShop migration context.