Good for UI/UX, good for notifications, good for analytics

A request from Data team:

Could Vortex provide, and would it be useful, if when downloading a mod as the result of it being part of a collection then it included the collection_id on the mod download event?

The point of this ticket is a few things.

1. A mod download/installation knowing when it's part of a bigger collection installation is good for analytics
2. It's also good for UI as Stefan's original premium upsell branding on the mod download nag screen wanted '1/234 mods` as a subtle hint to lead into premium