Rename static-analysis job to eclint, as eclint is its only function

What does this Merge Request do?

The static-analysis job only does one thing, so let's name it appropriately 🙂

Merge Request checklist

• [-] Tests added for new functionality. If not, please raise Issue to follow-up.
• This change is backward compatible. If not, please include steps to communicate to our users.
• [-] Documentation added/updated, if needed.
• [-] gdk doctor test added, if needed.

Closes #906 (closed)