Limited Edition (Hot Drops) Support

Limited Edition cosmetics (Hot Drops) now have additional metadata on player (main) profiles. Currently, only one such cosmetic exists, the Starfire Crown Hat.

The new keys are added to the _unlocked and _equipped cosmetic objects:

edition: the unique purchaser amount editional_total: total units sold

Both keys are optional, and you should support/tolerate any combination of the keys existing and missing.