Verified Commits support

[sebastien46]

I confirm that I have searched the issue tracker

Before opening an issue, take a few minutes to search the issue tracker (both open and closed issues) for the feature you are requesting. This will reduce the need for issue triage and save time.

• I confirm that I have searched the issue tracker

Describe the feature

• Support for viewing the Verification status of a commit, i.e. Verified or Unverified
• Support for viewing whether the commit was Verified using GitLab's Web UI

Additional context

User Documentation
API Documentation:

• Commits Signature API
• Web Commits Signature API

Declaration

• I have carefully read and agree to follow the contribution guidelines.