Let "poetry shell" subcommand take an optional "-c my_cmd" to run a custom command once the shell is initialized

• I have searched the issues of this repo and believe that this is not a duplicate.
• I have searched the documentation and believe that my question is not covered.

Feature Request

poetry shell should take an additional parameter, like so: poetry shell -c "celery -A myproject worker -l debug"

Problem with poetry run approach

I understand this is possible with poetry run celery -A myproject worker -l debug accomplishes this. But the problem with this approach is that when I hit CTRL+c it deactivates the virtual env. If I have to run any Django specific commands I need to manually do poetry shell or prefix it with poetry run.

I use tmuxp to automate my development environment. I usually have multiple panes opened. Longer commands are tedious. Having a -c option would be really helpful (at least, for me 😛). Please let me know if this okay and I can open a PR for this request myself.

Start by tracing how the poetry shell subcommand currently handles arguments and how poetry run differs when CTRL+c is pressed. Use the requested command form, poetry shell -c "celery -A myproject worker -l debug", as the acceptance case; done means the custom command runs after shell initialization while the shell remains available.