[FIX] common: kill the entire process group when using ctrl+c

[nda-odoo]

Description

using ctrl+c during an "odoo run" doesn't fully terminate the python process

Compliance

• I have read the contribution guide
• I made sure the documentation is up-to-date both in doctrings and the docs directory
• I have added or modified unit tests where necessary
• I have added new libraries to the requirements.txt file, if any
• I have incremented the version number according the versioning guide
• The PR contains my changes only and no other external commit

[nda-odoo]

@sea-odoo @brinkflew FYI les liens du template github sont cassés (ex: https://github.com/odoo-odev/odev/docs/CONTRIBUTING.md)

[sea-odoo]

@sea-odoo @brinkflew FYI les liens du template github sont cassés (ex: https://github.com/odoo-odev/odev/docs/CONTRIBUTING.md)

Where ? ( just tried on a new PR and the PR template seems to be correct)