Add cap support for CreateCylinder
Add cap support for CreateCylinder

See https://forum.babylonjs.com/t/meshbuilder-cap-parameter-for-cylinder-extrudepolygon-sides-parameter-for-box/2959/4
RaananW/Babylon.js,sebavan/Babylon.js,sebavan/Babylon.js,RaananW/Babylon.js,NicolasBuecher/Babylon.js,jbousquie/Babylon.js,NicolasBuecher/Babylon.js,Kesshi/Babylon.js,jbousquie/Babylon.js,jbousquie/Babylon.js,sebavan/Babylon.js,NicolasBuecher/Babylon.js,BabylonJS/Babylon.js,BabylonJS/Babylon.js,BabylonJS/Babylon.js,Kesshi/Babylon.js,Kesshi/Babylon.js,RaananW/Babylon.js