Added docs for Entity#clone()
Added docs for Entity#clone()

H1Gdev/engine,H1Gdev/engine,SuperStarPL/engine,RainsSoft/engine,3DGEOM/engine,nizihabi/engine,guycalledfrank/engine,maxwellalive/engine,shinate/engine,SuperStarPL/engine,shinate/engine,RainsSoft/engine,nizihabi/engine,aidinabedi/playcanvas-engine,nizihabi/engine,horryq/engine-1,3DGEOM/engine,maxwellalive/engine,sereepap2029/playcanvas,horryq/engine-1,guycalledfrank/engine,horryq/engine-1,sanyaade-teachings/engine,shinate/engine,sereepap2029/playcanvas,playcanvas/engine,SuperStarPL/engine,sereepap2029/playcanvas,MicroWorldwide/PlayCanvas,playcanvas/engine,sanyaade-teachings/engine,maxwellalive/engine,MicroWorldwide/PlayCanvas,3DGEOM/engine,RainsSoft/engine,sanyaade-teachings/engine,aidinabedi/playcanvas-engine