* Use that system to upload whether a plugin is installed or not to analytics.
* Compute "unique" size for root plugins to more accurately represent the incremental cost of a plugin in analytics.
* Provide sizes for key asset types in addition to tracking total cost of a plugin.
#rb matt.peters
#rb fabian.giesen
[CL 27084058 by dan thompson in ue5-main branch]
* Restaging a build no longer just constantly increases size
* Inclusive size actually looks at valid data
* Horde URL environment variable corrected.
* Add a new root pseudo plugin json event that holds the size of all plugins that don't belong to a root plugin.
#rb charles.bloom
[CL 26335038 by dan thompson in ue5-main branch]
