The idea here is to have a URL scheme package authors can include on their site which, when clicked, Will open creator companion and add the package/repo/template
When clicked, Creator Companion should open with a dialog that displays some info from the repo with a Confirm/Cancel choice. To make sure the user intended to add a package
For additional security https on port 443 should be required for VRCCC URLs with a valid certificate.
A template badge image should be created, branded by VRChat, which says "Add to Creator Companion" which indicates the one click option is available. Similar to the badges for mobile app stores.
If the creator companion is not installed but vrchat is, maybe have vrchat register the URL handler and redirect to the VCC download page.