Added typing information for `pc.Asset`'s `type` property (#3078)
Added typing information for `pc.Asset`'s `type` property (#3078)

* Added typing information for `pc.Asset`'s `type` property

* Plus some more type values for `Asset` `type` that are in general use in Mojiworks code at least
playcanvas/engine,playcanvas/engine,MicroWorldwide/PlayCanvas,MicroWorldwide/PlayCanvas