GPG signed tags

Description

After we have introduced GPG signed commits, i'd love to also sign the tags with my GPG key.

Proposal

Links / references

Example from GitHub

Overview

When creating a signed tag with git tag -s 1.0.0 -m "Release version 1.0.0" the signature doesn't show up on the current tags page:

Feature checklist

Make sure these are completed before closing the issue, with a link to the relevant commit.

• Feature assurance
• Documentation
• Added to features.yml