Give users suggestions on how to resolve `Cannot find implementation or library stub for module named "{module}"`

Feature

Give users suggestions on how to resolve Cannot find implementation or library stub for module named "{module}".

Pitch

I'm new to the ecosystem and didn't know a command that would fix mypy failing is pip install numpy. I think a suggestion on how to resolve this issue would help out people who don't use Python regularly, like myself.

Current behavior

p.py:1: error: Cannot find implementation or library stub for module named "numpy"
p.py:1: note: See https://mypy.readthedocs.io/en/stable/running_mypy.html#missing-imports

Desired behavior

p.py:1: error: Cannot find implementation or library stub for module named "numpy"
p.py:1: note: See https://mypy.readthedocs.io/en/stable/running_mypy.html#missing-imports
p.py:1: note: The following command may help: pip install numpy

Comienza con el diagnóstico de mypy para Cannot find implementation or library stub for module named "{module}" y revisa la documentación existente sobre imports faltantes enlazada en el mensaje. Determina cómo deberían seleccionarse y mostrarse sugerencias como pip install numpy y, después, verifica que el diagnóstico incluya un comando útil sin alterar la salida existente.