ci: enforce pr title format via a github actions workflow

[SaboniAmine]

Description

This PR adds a Github Actions workflow, executed on all PRs, checking the PR title against a regex based on conventional commits format (https://www.conventionalcommits.org/en/v1.0.0/).
This title formatting is enforced to avoid problems on PRs with a several commits, where squashing involves that the commit message is replaced by the PR title.

Related Issue

Fixes #(issue number)

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

Additional Notes

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[gsprochette]

LGTM, thanks a lot :)