Check and annotate packages across an entire project

[Moohan]

We often have projects where packages are loaded in a separate script or in a 'set-up' type script and used across other scripts throughout the project.

It would be good to be able to check and annotate across a whole project, some interesting notes I would like to see are:

• # Not used
• # Used in script x, y, z ...
• # ... (Also loaded in script x)