Update custom shader example to use statue
Update custom shader example to use statue

--HG--
branch : feature/model-v3

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